Professional developers manage their code professionally - to skilled developers, that means storing your source code in a version control system, like Subversion (SVN) or GIT. This blog post provide several video tutorials that teach you the basics on version control using SVN - a free and popular version control system.
Watch the video tutorials here to learn more:
Read the next blog post on advanced version control system concepts here.
Do you want to learn more on version control systems? Read this whitepaper: