While browsing I found this page
http://www.agileguitarforum.com/viewthread.php?tid=6526
I personally bought the PYOG manual a couple of years ago and I'm happy about it. While I suggest you to buy it, there you can get it in other ways... ;)
It explains great painting techniques, good for guitars but for stopboxes too (I followed that method to paint my PC case as well...)
I see other files too available to download...
Maybe they can be useful for somene of you...so I thought to share...
I would be very interested in this!!
-Joe Hart
these books are very good and the guy that wrote them is very helpful
i have painted and sold many guitars with tthe help of these books