Why sinatra and not rails? I've been trying to teach myself ruby (on rails) for an app idea that I have, and this was great news as I'd been having trouble getting off the ground with rails and the koala gem. But for someone new to programming like myself, it seems like there is a ton more learning materials out there for the rails framework than sinatra.

So in a way this seems to me like a very easy way to get a simple app up and running, but I lose all the help that's out there that's specific to the rails framework. Am I being naive in thinking that the little that I've learned about the rails framework won't apply to sinatra?