Stuart:

More complete book I have read (excellent guide for building; electrical chapter is a little outdated, though): “Take-off” (All about radio controlled model aircraft) by Alex Weiss.

Book Hangar at http://www.flying-models.com/

Downloadable e-book: “At The Field” (Offbeat Stories About R/C Model Airplanes And The People Who Fly Them) by David P. Andersen.

Enjoy!