copyright 2009, The Washington Post DRUG COVERAGE Even Idiots Get Sick 'The Pocket Idiot's Guide to Medicare Part D' (Alpha Books, $9.95) For Medicare enrollees who don't know their SNPs from their SEPs (Special Needs Plans and Special Enrollment Periods), this how-to book about Part D, which offers prescription drug benefits, could be a lifesaver. A screen-by-screen demonstration about how to use Medicare's Web site seems particularly helpful, though the small size of the screen shots could be trouble. Poor souls with more technical problems, such as filing appeals for drug coverage, might need a more detailed handbook, but business writer Lita Epstein, who also wrote 'The Complete Idiot's Guide to Social Security and Medicare,' has everyone else covered. UPDATED ADVICE Charting the Best Course 'The Healthcare Survival Guide' (Health Advocate, $6.95) This slim book, also available as a free download at www.healthcaresurvivalguide.com, is written for the unemployed but includes tips for anyone trying to navigate the health-care system. It's strength is in its timeliness: The guide includes information about how to utilize the COBRA subsidy passed by Congress in February and the trend of getting free care at drugstore clinics. Authors Martin Rosen and Abbie Leibowitz are co-founders of Health Advocate, which helps the employees of its corporate clients make best use of their health insurance benefits. 