by Ted Cushman No one likes paying taxes. But since everyone has to, the world is full of organizations and publications devoted to helping taxpayers with their life's least pleasant work. This month's featured books aren't geared toward helping you actually file your return. Instead, they aim to help you keep your tax obligation down, stay out of tax trouble, and, if the worst happens, minimize the pain of a close encounter with the IRS. Of the 25 chapters in Michael Thomsett's Contractor's Year- Round Tax Guide, only one (Chapter 19) actually deals with filing returns. As Thomsett puts it, "Your income tax return . . . simply reports the results of the planning you've done. . . . The real