Greetings! I lack the ability to draw a straight line, nor could I tell you what differentiates decent art from garbage half the time. In the past I could have given a damn less, as the repercussions of this just resulted in tacky art on the walls and getting my ass beat in pictionary. When it comes to tattoos and looking for good artists though, this lack of education can perhaps result in some poor choices.
To remedy this, I have been going through the threads here (http://www.lastsparrowtattoo.com/forum/general-tattoo-discussion/2396-what-makes-good-tattoo.html ), and making baby attempts at drawing (seriously, it's like a t-rex trying to type or do pushups). I have come upon a couple of youtube sites and books that have been helpful. I'm sure this will be baby stuff for the real artists in here, but hopefully for the layman who has time on their hands it will help identify the good from the bad, give them something productive to do, and also appreciate the work that goes into the process.
Proko - YouTube
5-Pencil Method
and for books
The Big Book of Drawing: András Szunyoghy: 9783848002498: Amazon.com: Books
If anyone has any other suggestions on books, videos, etc for the uber green horn, I would love to see them!