If you use marijuana to ease nausea, pain and other side effects of life with HIV, Medical Marijuana Law (by attorneys Richard Glen Boire and Kevin Feeney, $14.95, roninpub.com) is an indispensable guide. Chapters cover the legalities of “Qualifying Conditions,” “Dealing With Cops,” obtaining medical marijuana and other burning issues, such as: what to do when state and federal laws conflict.