On a previous thread, [I mentioned](https://news.ycombinator.com/item?id=5942320) that at some point I'm thinking about writing Learn Enough Rails To Be Dangerous to go along with the Ruby on Rails Tutorial—but it looks like, by using the Rails Tutorial, you can already become plenty dangerous. ;-)

Seriously, though, this is cool, and every developer-entrepreneur should do something like this just to get the experience of actually shipping a web app.