Start with high-confidence macintosh systems books, then narrow by subgenre or adjacent topics.
Cocoa Programming for OS X
Aaron Hillegass, Adam Preble
Mac OS X Leopard: the Missing Manual
David Pogue
Macs All-in-one for Dummies
Paul McFedries
Macbook for Dummies
Mark L. Chambers
Teach Yourself VISUALLY Macbook Pro and Macbook Air
Guy Hart-Davis
Using Mac OS X Lion Server
Charles Edge
Macintosh Terminal Pocket Guide
Daniel Barrett
Learning Unix for OS X
Dave Taylor
OS X Yosemite: the Missing Manual
