Unobtrusive Javascript in rails 4

Hello

I’m new in using Ruby on rails, and I was wondering how I can use Javascript in rails 4. I searched this topic a lot

on google and I found RailsCasts - #205 Unobtrusive Javascript. Is there any good books on this topic? do you know any great links where I can find more on this topic?

I’d start with Working with JavaScript in Rails — Ruby on Rails Guides

Fred