Start with Sinatra (http://www.sinatrarb.com/) instead. I had worked with PHP for a little while, and I decided to try out ROR. I could not understand it at all. I did some plain ruby for a while.
Eventually, I heard about Sinatra, and decided to try it out. It's a great way to learn about web apps. You'll learn the HTTP verbs if you haven't already, and you'll understand the routing process.
When you jump into Rails, you'll already understand Controllers and Routers, since Sinatra is basically the router and controller of Rails combined. You'll probably learn about views too.
Eventually, I heard about Sinatra, and decided to try it out. It's a great way to learn about web apps. You'll learn the HTTP verbs if you haven't already, and you'll understand the routing process.
When you jump into Rails, you'll already understand Controllers and Routers, since Sinatra is basically the router and controller of Rails combined. You'll probably learn about views too.
Basically, learn sinatra, then go to Rails.