Hello,
I am trying to learn Ruby, reading the "pickaxe" book v 2.0. It seems
pretty decent. However, I am looking for something different. Firstly, I
want something that has assignments in it - something to prove to myself
that I have grasped the concepts introduced in the preceeding chapter.

The other thing I'd like is a book that is written for a specific
IDE/editor, instead of irb. I'm used to writing in vi, but I want to get
away from that 1980s style of programming (part of my whole change of
attitude which is resulting in my studying Ruby).

I don't have a lot of money, so I can't afford to take a college course.
But, I would like that college textbook (without the college textbook
cost).

I'm experienced with C, so I don't need to be completely spoon-fed
programming. Object-orientation is still a bit new to me, but I can hack
it ;)