Book excerpt: (String Letter Publishing). Acoustic guitarists can now better understand their instruments, preserve and protect their value, and get the sounds they really want, thanks to this new book from the experts at Acoustic Guitar magazine. This indispensable guide begins by acquainting players with their instruments and laying to rest some pervasive guitar myths, then proceeds through various aspects of basic care, setup, common repairs, and pickup installation. Whether it's cleaning and polishing a beloved guitar, protecting it from theft or changes in humidity, selecting a case, or performing diagnostics, readers will become more savvy acoustic guitar owners and repair-shop customers and can forego dubious advice from well-meaning friends and anonymous "experts" on the Web. Includes a primer and glossary of terms.