I've got "SW2006 for Designers by Sham Tickoo" on front of me... I found it useful there were some features I didn't know like "composite curve" (combining a helix curve with end-clips [on both sides] to form a single-spring path).
Also I found the book "inside SW 4th edition by David Murray"...
I've bought via amazon the complete set of SW2006 books... one of them was "inside solidworks 4th edition by david murray". I found a good section on sheetmetal. Within minutes of flipping the pages I found features/functions that I always wanted to do but never knew how.
Anyway you can find a...