diff --git a/README.md b/README.md
index db5cde4..f7a98f5 100644
--- a/README.md
+++ b/README.md
@@ -2,19 +2,23 @@
 
 This repository will walk you through the process of quickly getting started using Node.js and MongoDB together.  
 
-[Lauren Schaefer](https://github.com/ljhaywar) is actively working to add files to this repo and drafting a blog series that will walk you through the code.  She will be updating this readme as she publishes blog posts.
+This branch uses MongoDB 4.0, MongoDB Node.js Driver 3.3.2, and Node.js 10.16.3. To see the latest version, visit the [master branch](https://github.com/mongodb-developer/nodejs-quickstart).
 
 ## Topics
 
-* How to get connected to your database: [blog post](https://www.mongodb.com/blog/post/quick-start-nodejs-mongodb--how-to-get-connected-to-your-database) | [code example](connection.js)
-* Creating documents: [blog post](https://www.mongodb.com/blog/post/quick-start-nodejs--mongodb--how-to-create-documents) | [code example](create.js)
-* Reading documents: [blog post](https://www.mongodb.com/blog/post/quick-start-nodejs--mongodb--how-to-read-documents) | [code example](read.js)
-* Updating documents: [blog post](https://www.mongodb.com/blog/post/quick-start-nodejs--mongodb--how-to-update-documents) | [code example](update.js)
-* Deleting documents: [blog post](https://www.mongodb.com/blog/post/quick-start-nodejs--mongodb--how-to-delete-documents) | [code example](delete.js)
-* The aggregation framework: [blog post](https://www.mongodb.com/blog/post/quick-start-nodejs--mongodb--how-to-analyze-data-using-the-aggregation-framework) | [code example](aggregation.js)
-* Transactions: [blog post](https://www.mongodb.com/blog/post/quick-start-nodejs--mongodb--how-to-implement-transactions) | [code example](transaction.js)
-* Change streams: [blog post](https://www.mongodb.com/blog/post/node-js-change-streams-and-triggers) | [code example](changeStreams.js)
+* How to get connected to your database: [blog post](https://developer.mongodb.com/quickstart/node-connect-mongodb/) | [code example](connection.js)
+* Creating documents: [blog post](https://developer.mongodb.com/quickstart/node-crud-tutorial/) | [code example](create.js)
+* Reading documents: [blog post](https://developer.mongodb.com/quickstart/node-crud-tutorial/) | [code example](read.js)
+* Updating documents: [blog post](https://developer.mongodb.com/quickstart/node-crud-tutorial/) | [code example](update.js)
+* Deleting documents: [blog post](https://developer.mongodb.com/quickstart/node-crud-tutorial/) | [code example](delete.js)
+* The aggregation framework: [blog post](https://developer.mongodb.com/quickstart/node-aggregation-framework/) | [code example](aggregation.js)
+* Transactions: [blog post](https://developer.mongodb.com/quickstart/node-transactions/) | [code example](transaction.js)
+* Change streams: [blog post](https://developer.mongodb.com/quickstart/nodejs-change-streams-triggers/) | [code example](changeStreams.js)
 
 ## Related Videos
 
 [How to Perform the CRUD Operations Using MongoDB & Node.js](https://youtu.be/ayNI9Q84v8g)
+
+## Questions?
+
+Questions about this repo or how to use MongoDB and Node.js together?  Ask them in the [MongoDB Community](https://community.mongodb.com).
diff --git a/create.js b/create.js
index 3d7f8bb..b58469e 100644
--- a/create.js
+++ b/create.js
@@ -3,13 +3,13 @@ const {MongoClient} = require('mongodb');
 async function main(){
     /**
      * Connection URI. Update <username>, <password>, and <your-cluster-url> to reflect your cluster.
-     * See http://bit.ly/NodeDocs_lauren for more details
+     * See https://docs.mongodb.com/drivers/node/ for more details
      */
     const uri = "mongodb+srv://<username>:<password>@<your-cluster-url>/sample_airbnb?retryWrites=true&w=majority";
    
     /**
      * The Mongo Client you will use to interact with your database
-     * See bit.ly/Node_MongoClient for more details
+     * See https://mongodb.github.io/node-mongodb-native/3.3/api/MongoClient.html for more details
      */
     const client = new MongoClient(uri);
 
@@ -68,7 +68,7 @@ main().catch(console.error);
  * @param {Object} newListing The new listing to be added
  */
 async function createListing(client, newListing){
-    // See http://bit.ly/Node_InsertOne for the insertOne() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#insertOne for the insertOne() docs
     const result = await client.db("sample_airbnb").collection("listingsAndReviews").insertOne(newListing);
     console.log(`New listing created with the following id: ${result.insertedId}`);
 }
@@ -79,7 +79,7 @@ async function createListing(client, newListing){
  * @param {Object[]} newListings The new listings to be added
  */
 async function createMultipleListings(client, newListings){
-    // See http://bit.ly/Node_InsertMany for the insertMany() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#insertMany for the insertMany() docs
     const result = await client.db("sample_airbnb").collection("listingsAndReviews").insertMany(newListings);
 
     console.log(`${result.insertedCount} new listing(s) created with the following id(s):`);
diff --git a/delete.js b/delete.js
index 62cc95a..bc04225 100644
--- a/delete.js
+++ b/delete.js
@@ -3,13 +3,13 @@ const { MongoClient } = require('mongodb');
 async function main() {
     /**
      * Connection URI. Update <username>, <password>, and <your-cluster-url> to reflect your cluster.
-     * See http://bit.ly/NodeDocs_lauren for more details
+     * See https://docs.mongodb.com/drivers/node/ for more details
      */
     const uri = "mongodb+srv://<username>:<password>@<your-cluster-url>/sample_airbnb?retryWrites=true&w=majority";
 
     /**
      * The Mongo Client you will use to interact with your database
-     * See bit.ly/Node_MongoClient for more details
+     * See https://mongodb.github.io/node-mongodb-native/3.3/api/MongoClient.html for more details
      */
     const client = new MongoClient(uri);
 
@@ -50,12 +50,11 @@ main().catch(console.error);
 /**
  * Delete an Airbnb listing with the given name.
  * Note: If more than one listing has the same name, only the first listing the database finds will be deleted.
- *       It's best to use deleteOne when querying on fields that are guaranteed to be unique.
  * @param {MongoClient} client A MongoClient that is connected to a cluster with the sample_airbnb database
  * @param {string} nameOfListing The name of the listing you want to delete
  */
 async function deleteListingByName(client, nameOfListing) {
-    // See http://bit.ly/Node_deleteOne for the deleteOne() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#deleteOne for the deleteOne() docs
     const result = await client.db("sample_airbnb").collection("listingsAndReviews").deleteOne({ name: nameOfListing });
     console.log(`${result.deletedCount} document(s) was/were deleted.`);
 }
@@ -66,7 +65,7 @@ async function deleteListingByName(client, nameOfListing) {
  * @param {Date} date The date to check the last_scraped property against
  */
 async function deleteListingsScrapedBeforeDate(client, date) {
-    // See http://bit.ly/Node_deleteMany for the deleteMany() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#deleteMany for the deleteMany() docs
     const result = await client.db("sample_airbnb").collection("listingsAndReviews").deleteMany({ "last_scraped": { $lt: date } });
     console.log(`${result.deletedCount} document(s) was/were deleted.`);
 }
@@ -75,12 +74,11 @@ async function deleteListingsScrapedBeforeDate(client, date) {
  * Print information indicating if a listing with the given name exists. 
  * If a listing has the 'last_scraped' field, print that as well.
  * Note: If more than one listing has the same name, only the first listing the database finds will be printed.
- *       It's best to use findOne when querying on fields that are guaranteed to be unique.
  * @param {MongoClient} client A MongoClient that is connected to a cluster with the sample_airbnb database
  * @param {String} nameOfListing The name of the listing you want to find
  */
 async function printIfListingExists(client, nameOfListing) {
-    // See http://bit.ly/Node_findOne for the findOne() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#findOne for the findOne() docs
     const result = await client.db("sample_airbnb").collection("listingsAndReviews").findOne({ name: nameOfListing });
 
     if (result) {
diff --git a/read.js b/read.js
index 1369a13..eff4755 100644
--- a/read.js
+++ b/read.js
@@ -3,13 +3,13 @@ const { MongoClient } = require('mongodb');
 async function main() {
     /**
      * Connection URI. Update <username>, <password>, and <your-cluster-url> to reflect your cluster.
-     * See http://bit.ly/NodeDocs_lauren for more details
+     * See https://docs.mongodb.com/drivers/node/ for more details
      */
     const uri = "mongodb+srv://<username>:<password>@<your-cluster-url>/sample_airbnb?retryWrites=true&w=majority";
 
     /**
      * The Mongo Client you will use to interact with your database
-     * See bit.ly/Node_MongoClient for more details
+     * See https://mongodb.github.io/node-mongodb-native/3.3/api/MongoClient.html for more details
      */
     const client = new MongoClient(uri);
 
@@ -41,12 +41,11 @@ main().catch(console.error);
 /**
  * Print an Airbnb listing with the given name
  * Note: If more than one listing has the same name, only the first listing the database finds will be printed.
- *       It's best to use findOne when querying on fields that are guaranteed to be unique.
  * @param {MongoClient} client A MongoClient that is connected to a cluster with the sample_airbnb database
  * @param {String} nameOfListing The name of the listing you want to find
  */
 async function findOneListingByName(client, nameOfListing) {
-    // See http://bit.ly/Node_findOne for the findOne() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#findOne for the findOne() docs
     const result = await client.db("sample_airbnb").collection("listingsAndReviews").findOne({ name: nameOfListing });
 
     if (result) {
@@ -73,7 +72,7 @@ async function findListingsWithMinimumBedroomsBathroomsAndMostRecentReviews(clie
     maximumNumberOfResults = Number.MAX_SAFE_INTEGER
 } = {}) {
 
-    // See http://bit.ly/Node_find for the find() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#find for the find() docs
     const cursor = client.db("sample_airbnb").collection("listingsAndReviews")
         .find({
             bedrooms: { $gte: minimumNumberOfBedrooms },
diff --git a/template.js b/template.js
index af74dea..20b2bb0 100644
--- a/template.js
+++ b/template.js
@@ -3,13 +3,13 @@ const { MongoClient } = require('mongodb');
 async function main() {
     /**
      * Connection URI. Update <username>, <password>, and <your-cluster-url> to reflect your cluster.
-     * See http://bit.ly/NodeDocs_lauren for more details
+     * See https://docs.mongodb.com/drivers/node/ for more details
      */
     const uri = "mongodb+srv://<username>:<password>@<your-cluster-url>/sample_airbnb?retryWrites=true&w=majority";
     
     /**
      * The Mongo Client you will use to interact with your database
-     * See bit.ly/Node_MongoClient for more details
+     * See https://mongodb.github.io/node-mongodb-native/3.3/api/MongoClient.html for more details
      */
     const client = new MongoClient(uri);
 
diff --git a/update.js b/update.js
index 8156ea0..57a9c0f 100644
--- a/update.js
+++ b/update.js
@@ -3,13 +3,13 @@ const { MongoClient } = require('mongodb');
 async function main() {
     /**
      * Connection URI. Update <username>, <password>, and <your-cluster-url> to reflect your cluster.
-     * See http://bit.ly/NodeDocs_lauren for more details
+     * See https://docs.mongodb.com/drivers/node/ for more details
      */
     const uri = "mongodb+srv://<username>:<password>@<your-cluster-url>/sample_airbnb?retryWrites=true&w=majority";
 
     /**
      * The Mongo Client you will use to interact with your database
-     * See bit.ly/Node_MongoClient for more details
+     * See https://mongodb.github.io/node-mongodb-native/3.3/api/MongoClient.html for more details
      */
     const client = new MongoClient(uri);
 
@@ -56,13 +56,12 @@ main().catch(console.error);
 /**
  * Update an Airbnb listing with the given name
  * Note: If more than one listing has the same name, only the first listing the database finds will be updated.
- *       It's best to use updateOne when querying on fields that are guaranteed to be unique.
  * @param {MongoClient} client A MongoClient that is connected to a cluster with the sample_airbnb database
  * @param {string} nameOfListing The name of the listing you want to update
  * @param {object} updatedListing An object containing all of the properties to be updated for the given listing
  */
 async function updateListingByName(client, nameOfListing, updatedListing) {
-    // See http://bit.ly/Node_updateOne for the updateOne() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#updateOne for the updateOne() docs
     const result = await client.db("sample_airbnb").collection("listingsAndReviews").updateOne({ name: nameOfListing }, { $set: updatedListing });
 
     console.log(`${result.matchedCount} document(s) matched the query criteria.`);
@@ -74,7 +73,6 @@ async function updateListingByName(client, nameOfListing, updatedListing) {
  * If a listing with the given name exists, it will be updated.
  * If a listing with the given name does not exist, it will be inserted.
  * Note: If more than one listing has the same name, only the first listing the database finds will be updated.
- *       It's best to use updateOne when querying on fields that are guaranteed to be unique.
  * Note: For educational purposes, we have split the update and upsert functionality into separate functions.
  *       Another option is to have a single function where a boolean param indicates if the update should be an upsert. 
  * @param {MongoClient} client A MongoClient that is connected to a cluster with the sample_airbnb database
@@ -82,7 +80,7 @@ async function updateListingByName(client, nameOfListing, updatedListing) {
  * @param {object} updatedListing An object containing all of the properties to be upserted for the given listing
  */
 async function upsertListingByName(client, nameOfListing, updatedListing) {
-    // See http://bit.ly/Node_updateOne for the updateOne() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#updateOne for the updateOne() docs
     const result = await client.db("sample_airbnb").collection("listingsAndReviews").updateOne({ name: nameOfListing }, { $set: updatedListing }, { upsert: true });
     console.log(`${result.matchedCount} document(s) matched the query criteria.`);
 
@@ -98,7 +96,7 @@ async function upsertListingByName(client, nameOfListing, updatedListing) {
  * @param {MongoClient} client A MongoClient that is connected to a cluster with the sample_airbnb database
  */
 async function updateAllListingsToHavePropertyType(client) {
-    // See http://bit.ly/Node_updateMany for the updateMany() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#updateMany for the updateMany() docs
     const result = await client.db("sample_airbnb").collection("listingsAndReviews").updateMany({ property_type: { $exists: false } }, { $set: { property_type: "Unknown" } });
     console.log(`${result.matchedCount} document(s) matched the query criteria.`);
     console.log(`${result.modifiedCount} document(s) was/were updated.`);
@@ -107,12 +105,11 @@ async function updateAllListingsToHavePropertyType(client) {
 /**
  * Print an Airbnb listing with the given name
  * Note: If more than one listing has the same name, only the first listing the database finds will be printed.
- *       It's best to use findOne when querying on fields that are guaranteed to be unique.
  * @param {MongoClient} client A MongoClient that is connected to a cluster with the sample_airbnb database
  * @param {String} nameOfListing The name of the listing you want to find
  */
 async function findListingByName(client, nameOfListing) {
-    // See http://bit.ly/Node_findOne for the findOne() docs
+    // See https://mongodb.github.io/node-mongodb-native/3.3/api/Collection.html#findOne for the findOne() docs
     const result = await client.db("sample_airbnb").collection("listingsAndReviews").findOne({ name: nameOfListing });
 
     if (result) {