Running Mac OS X Mavericks, I have completely jacked up my Rails installation to the point that I am unable to sort out what all is wrong. I'm working through the railsapps.org book on learning rails and am simply trying to set up the test environment so I can actually start learning... Anyway, I'm so messed up now that I really just need to flush it all and start over. I have reinstalled Rails, and now the default gemset is empty. I am unable to figure out at this point how to repopulate it with the default gems (uninstalling and reinstalling Rails did not do this for me).
At this point I'm so far down a rabbit hole that I'm unable to orientate myself, so I feel like I need to just resurface and start over from zero fresh. How would I go about resetting my environment such that I can do this? I assume I need to uninstall Rails, RVM, etc?