I can't believe there's trolling going on here. RbMU is a free service run for the community that helps intermediate programmers make the difficult next step, and gets them contributing to open source. We're so lucky to have them in the Ruby community!<p>I did five or six Ruby quizzes (rubyquiz.com) in my spare time with a mentor (unaffiliated with RbMU, just a friendly guy who agreed to spend a couple of hours on his Sundays coding with me over TeamViewer), read a few Ruby books and blogs, and was accepted into core skills for January. Getting past beginner isn't necessarily easy, but there is a much more well-defined path for learning than there is for learning as an intermediate, where questions you have may not always have answers in books and guided project work seems to be the best way forward.<p>Since I have not done the course yet I cannot speak for the quality, but I have only heard good things. At the least, RbMU has been a great target for me to aim for while leveling up as a beginner, and a source for practice problems. If practicingruby.com is any indication of the quality, I think I'll be in good hands.