I can't install ruby on rails on my mac - Sorry I know it's been posted 1 million times before

rubyonrails-talk
1

Have you looked at RVM? If not, check it out. It makes installing/managing Ruby versions a synch, as well as gems.

2

I use these two pages to get RVM, Ruby and RoR setup and haven't had any problems

https://rvm.io/rvm/install/