As others have said,
www.homepokertourney.com is a must-read for everyone who hosts home games. Robert's Rules of poker (
http://www.homepokertourney.com/rules_roberts.htm) is the standard set of rules. It's huge, but it covers every last rule.
I have it printed out for anyone who wants to question the rules. I also have my own little cheat sheet that has the tournament setup, chip values, etc. If it's not discussed in my cheat sheet, it defaults to Robert's Rules of Poker. Also, the host always has the last word in disputes where something is not completely clear cut. Period. Don't like it? Don't play.
-Nate