Booklegger 2010-2011 USGA Rules Book Written in a very precise and deliberate fashion, the Booklegger 2010-2011 USGA Rules Book enables you to learn and understand the definitions of common words used on the course. It also shows you which rules to apply to which situation. Carry a rules book in your golf bag and use it whenever a question arises. If in doubt, play the course as you find it and play the ball as it lies. Once back in the clubhouse look up your questions and help resolve any outstanding queries.