Back in the day, I used CodeWarrior to learn C++ on 68k Macs and the first PowerPC Macs. Since then, I've done a little fooling around with other languages, but I'd like to get back to C or C++. I'm looking into buying a copy of CodeWarrior (probably on eBay), but I have no idea what versions are what. For instance, what the heck is the difference between CodeWarrior, CodeWarrior Pro, and CodeWarrior Gold? And which version is as near to current as possible? Is there a version that runs on OS X? What is the last version for OS 9? Which is the last version that targets 68k?