Started learning Rails, the MVC principle is familiar to me, so difficult to master it is not. The only problem is that it's difficult to keep in mind a lot of "chips" of this framework. Therefore, I would like, what would you recommend crib (cheat sheet) with the maximum possible amount of information, which could be printed out and look at them.
As I understand it, rails evolyutsioniruet with a very fast speed, losing compatibility with previous versions, I would like to have the most current information at the moment. On the Internet there are only tables of two or three years ago.