We understand that the above sections are only the most trivial first steps but half the fun of working on POV-Ray source is digging in and figuring it out on your own. That's how the POV-Team members got started. We've tried to make the code as clear as we can.
Be sure to read the cmpl_xxx.doc files in your platform specific and compiler specific directories for some more minor help if you are working on a supported platform or compiler.
Good luck!