If you mean non-fiction, the list is endless. The Professional Pilot Career Guide by Robert P. Mark is excellent. A good, broad, introductory perspective on how to go about getting started on an airline, and to some extent corporate, piloting career.
If you mean fiction, there's the classic Airport by Arthur Hailey. A more modern author is John J. Nance, whose stuff is really good. Best aviation fiction book I've read, though, is The Downing of Flight Six Heavy by Robert P. Lafferty. Hard to find, but awesome book.