Book excerpt: Through detailed case studies Ragnar shows you how carpenters, woodcutters, farmers, housecleaners, computer consultants, mechanics, lawyers, vendors, locksmiths and others are cashing in on today's booming economy - and keeping what they earn by not paying taxes. From these undergrounders you'll learn how to locate work, get paid without supplying identifying numbers, prepare a realistic budget, advertise your services or product and finance your project when you can't go to the bank. You'll also learn the pitfalls of working off the books and what you can do to prepare for them.