This application is the melting pot of your knowledge.
You need rails 4.2.6 and ruby 2.3.1.
Checkout source code and edit your config/database.yml.
$ vi config/database.yml
create database.
$ rake db:create $ rake db:migrate
initial data load.
$ rake db:seed
start application.
$ rails s
You can login as admin with username: [email protected] and password: admin.