"Unfriendly Skies" by Captain X
....actually, this was the first aviation related book I had ever read years ago. You won't find too much technical guidance here, just some stories from an anonymous captain for an unknamed airline and what his career was like.
Really sparked my desire to become a pilot. It does speak to an non-pilot perspective, but has some amusing tales tales of glamour and disgrace before and after deregulation.
After the almost twenty years that have passed since this book went to print, it remains an excellent source for a peak inside aviation right when enough time had passed for the first definetive review on dereg. X gives an excellent view of the airline industry at that time and much of what is discussed is still visable today. A book that is worth the read and $ to buy, you will not regret it.
For more lighter reading and a few laughs check out "Plane Insanity" by Elliot Hester. A profsional FA for a major airline dicusses his motavation for becoming an FA and the high jinx of pax, crew members, customs agents and planes alike.