I'm an experienced programmer, who's starting to use Ruby on Rails for the first time. I need some documentation that JUST explains how variable names are manipulated. Things I need to understand:
I don't need a book that explains how to write a program from scratch (I have a large one that I'm already working with). I don't need something that explains how Ruby works, I can learn the language on my own. I need a reference where I can look things up easily.
Also, if there is a better resource to ask this question, that would be great as well. There doesn't appear to be a Stack Exchange site for asking resource recommendation questions...