Most of the books listed accompany FabLabs as deployed around the world; combination reference, introduction to fields, and inspiration. Some are just handy, a few will stay within reach on your bookshelves for life. --Amy.
"Linux for Dummies" ISBN:0764579371

"Linux Cookbook", Carla Schroder ISBN:0596006403

"The Official Blender 2.3 Guide: Free 3D Creation Guide for Modeling, Animation and Rendering", Ton Roosendahl, Stefano Selleri ISBN:1593270410

"Learning Python, Second Edition", Mark Lutz, David Ascher ISBN:0596002815

"Python in a Nutshell", Alex Martelli ISBN:0596001886

"Computer Organization and Design", David Patterson and John Hennessy ISBN:1558606041

"AVR: An Introductory Course", John Morton ISBN:0750656352

"Programming and Customizing the AVR Microcomputer", Dhananjay Gadre ISBN:007134666X

"Analog Interfacing to Embedded Microprocessor Systems", Stuart Ball ISBN:0750677236

"Handbook of Modern Sensors: Physics, Designs and Applications", Jacob Fraden ISBN:0387007504

"The Physics of Information Technology", Neil Gershenfeld ISBN 0521580447

"Practical Electronics for Inventors", Paul Scherz ISBN:0070580782

"The Electronics Handbook", Jerry C. Whittaker ISBN:0849383455

"Electric Motors and Their Controls: An Introduction", Tak Kenjo ISBN:0198562403

"Electric Motors and Control Techniques", Irving M. Gottleib ISBN:0070240124

"The Art of Electronics", Paul Horowitz, Winfield Hill ISBN:0521370957

"Antenna Theory: Analysis and Design", Constantine A. Balanis ISBN: 047166782X

"Machinery's Handbook Guide", John Amiss et al  ISBN: 0831127996

"Mechanisms and Mechanical Devices Sourcebook", Neil Sclater et al, ISBN:0071361693

"Ingenious Mechanisms for Designers and Inventors", Franklin D. Jones ISBN:0831110848

"Precision Machine Design", Alexander Slocum ISBN:0872634922

"Materials Selection in Mechanical Design", Michael Ashby ISBN:0750643579

"Building Scientific Apparatus", John Moore, et al. ISBN:0813340063

"The Nature of Mathematical Modelling", Neil Gershenfeld ISBN 0521570956