installing or overwriting too many old installs

I think last time I installed ruby successfully, I was using code school. So I have things installed like RVM, I believe, homebrew, jewelrybox, base, and everything else they said to install on initial setup. I want to start out fresh and go straight by treehouse's most recent install tutorial, which may have messed things up significantly in the first place as I went through the directions of the installation course at the bottom of the list of courses which tells to install osx-gcc-installer first... then you go to other sites to download the rest and all they talk about is gcc being outdated. If this is an outdated video series with the same motive but old, I'd suggest taking it off the site as the new dircetions I want to follow seem much more update.

So really what I'd like to do is rid my computer of anything ruby related as if I had just got a new mac and came to this tutorial for the first time. I'm familiar with terminal but not with this error message appearing before my option to input text every time I open terminal... someone please help!

-bash: /Users/[myname]/.bash_profile: line 8: unexpected EOF while looking for matching `"' -bash: /Users/[myname]/.bash_profile: line 9: syntax error: unexpected end of file