I'm a backer of Daniel Kehoe's Learn Ruby on Rails ebook on Kickstarter. While I'm certainly not coming from a background of vast experience, I've tried other resources such as Treehouse (which is great by the way), it is VERY approachable and would lend itself to newbies and Product Managers who are learning to become more technical. After a break from Treehouse, I forgot most of the concepts as the stuff I learned had atrophied. When I needed to start fresh, and from a different perspective, his ebook is a great starting point for the absolute beginner.

I think it's awesome that Daniel opened up for people to download the ebook for free. I don't mind the $18 that I ponied up because I believe the value I've received is far beyond that.