Multimeters are a vital part of any electronics project, but learning how to use one isn& as simple as it looks. Thankfully, the above video from Adafruit walks you through pretty much everything you need to know.
The GPS Homing Device. - - Product Description: This is the simplest portable GPS locating device available, ideal for finding your car after shopping or your hotel after a day of touring in an unfamiliar city.
Hacking Electronics: An Illustrated DIY Guide for Makers and Hobbyists by Simon Monk. Who needs an electrical engineering degree? This intuitive guide shows how to wire, disassemble, tweak, and re-purpose everyday devices quickly and easily.