I've just come across a terrific blog by Teo, a bookbinder in Portugal. Her leather bound books are amazing. She also does edge painting on her books and she has written a post that simply and easily describes how to do edge painting. Here's the link: Edge Painting
I've added some more examples of edge painting by other Bookbinder.
I've also provided the link in the sidebar under blogs.
The Guild of Book Workers USA
MILLIMETER BINDINGS henryhebert.net/2012/01/11/millimeter-and-rubow-bindings
HAND SEWN HEADBANDS
Be sure to check out the bookbinding blogs too.
They often have tutorials
BIG JUMP PRESS
Beautiful books and boxes in Finland
Portugal - leather tooling
OWL AND LION
Bookbinding workshops in Scotland
Forum & lots of info
BECCA MAKING FACES
Examples and TUTs of every Japanese stitch in the world