Continental Chess Association provides a concise (2-page) summary of the key tournament rules that every tournament player should know. Please let us know if you spot a rule that differs for USCF play.
http://www.chesstour.com/ContinentalChessAssociationRules-Updated-3-23-14
I've only bought 3 chess books in the last 7 years. I download the rest off the internet. If it is indeed true that the USCF rules book is not copy protected, then why hasn't someone yet posted a pdf of the book somewhere?