I'm also a rank beginner and I found the DVD "Tree Climbing Basics" to be EXCELLENT! It goes too slow in some areas, but is extremely well done and thorough. It uses the most basic of methods, but I think it's a very good starting point. Watch that video several times, get proficient with the knots and tie in for an eight foot climb several times before putting the throw line on a high crotch.
Supplement the video with the common book "The Tree Climbers Basics," along with engaging the brain for a serious learning experience and I think you can learn it safely.
I can't remember who on this site recommended this book to me, but whoever it was, I owe a big thank you.
My $0.02,
Doc