Tennis Rules & Etiquette
http://www.itftennis.com/abouttheitf/rulesregs/rules.asp
and here is a link to the code: the players' guide for unofficiated matches:
http://dps.usta.com/usta_master/usta/doc/content/doc_13_22409.pdf?5/29/2
When you've read all that, test your knowledge on a quiz!
http://tennis.about.com/od/faqandreference/l/aarulesquiz.htm
