Watch a video or follow any sources to learn , for the things which are confusing follow the DOCUMENTATION.
In the above folders i have followed Patrick collins this 32hr long course from which i have finished 13hr+ videos and have made some notes on the important topics
In Part4 , there are 2 folders Which will contain basics of ETHERS and HARDHAT.
After part4 just see the >>>>>>>>>>>>>>>>Casino-b<<<<<<<<<<<< in the Casino Folder in the Dapps repo for getting the better idea about Chainlink (VRF and KEEPERS)