First off, welcome to the Buzz! Tons of great info and people on here, read up and you'll learn a lot. That being said, it's hard to start out completely on your own. Are you currently working for a tree service? Are you looking to work for a tree service? Or are you working elsewhere and just looking to learn how to climb? When I was in your shoes, I found a local tree company that was looking for good employees and willing to train. Since then, I've worked for several tree companies who were happy to put the time and effort into making climbers out of interested ground guys, because good climbers are much harder to find than ground pounders.