I recently finished writing an article called What an Indie Needs to Know About Copyright.
I wrote it because it still amazes me how many independent game developers do not know about copyright. Either they overestimate what it is that copyright does for them, or they underestimate what it does for other people. The entire purpose of copyright is sometimes confused! What can you do with public domain works? What about fair use? What IS copyright actually protecting?
I don’t pretend that I know everything about copyright law, but I have done a fair amount of research, and I hope I have condensed that knowledge into something useful and easy to read for other indie developers. In the end, there are a few resources you could consult for more details, and of course you should consult a lawyer about anything you aren’t sure about. It’s your business to know, after all, and the expense may be worth it.
I want to thank Keith “Uhfgood” Weatherby II and Kelli Lydon for proof reading and providing some great feedback.