You are in luck... I have just the book for you. Its called "The Fretboard Workbook". Its an MIT book that you can buy on Amazon. You'll also want to get some fretboard paper... you can buy it pretty cheap on-line from Guitar Center. Don't bother trying to make your own fretboard paper... for the hassle its just easier to buy a couple of pads that will keep you going for a long time.

The book will ask you to play through some exercises, but you can skip that if you have to. Its a great book... I think its just what you're looking for. It starts very basic and builds up slowly. I found it really helpful.

Get well!