Set up my dev environment today. Wow, was that frustrating!
I had a slew of error messages but luckily with googling, stackoverflow, and some uninstalling/reinstalling Xcode and RVM and updating OpenSSL, I finally got everything installed by following the RailApps Tutorial. Whew. I am learning about how to use a Mac (long-time PC user until a year ago when Win8 changed my mind) alongside learning how to be a developer!
Glad I accomplished this today, I was so disappointed this morning when I was trying to figure it out and I kept getting 3 different error messages. This took me most of the day to figure out and finish the install, but it's done and working as far as I know!