I made a cheat sheet with minimal explanations of different concepts, referred from Michael Hartl’s "Learn Web Development with Rails - Fourth Edition" tutorials. The text book is really awesome & helped me to build a simple blogging website similar to basic version of Twitter and the source code is available in this repository.

Pleaee refer to the cheatsheets, as it might be a good start for preparing ruby-on-rails framework or recollect the concepts learnt from the above mentioned text book.

Ruby cheatsheet: https://www.notion.so/Ruby-Cheat-Sheet-7c8aabc9268b4e65b5691245dd19068c

Rails cheatsheet: https://www.notion.so/Ruby-on-Rails-Cheat-Sheet-61106a73031d46ec81c285daaebf1409

If you are a beginner to Ruby, please watch this 4-hours tutorial from freeCodeCamp. Though its quite a long, its worth watching it!

A special thanks to Harish for contributing in making Ruby cheatsheet.