Here's a handy little "cheat sheet" that tells you what all the SVN status codes mean. I was tired of doing
So I made this simple little sheet. Print it out. Stick it on the wall. In a month, you know the codes and throw it away (or better yet, give it to your friend who is learning SVN).
SVN Status Simple Cheat Sheet
Full Blown SVN Cheat Sheet
If you want the real-deal full blown Subversion cheat-sheet then there's this handy refcard that should cover most of your needs - but it's two pages and has all sorts of other stuff I don't care about. Hence my small status code cheat sheet :)