We're RailsMN and helping people learn Rails by building OpenCamp, the free & open source version of BaseCamp, a project management application.
We've compiled instructions for how we incrementally built OpenCamp here, open_camp sessions.
We've also created a simple Rails Development environment (so you don't have to spend hours installing and setting up Rails). Check it out, railsmn-dev-box.
We'd love your feedback. Open an issue, or reach out to the RailsMN organizers, @derekrockwell or @westonplatter
More to come later!