Yeah. I've meet alot of arseholes myself and frankly they weren't that good to begin with, they just thought they were. I had one guy who also taught but he would play the guitar more than the student would. I believe you can learn the bulk of the guitar on your own, but it's always nice to have someone help you were you are having troubles at. Even tricks and stuff. About learning yngwie from someone, good luck finding someone who can personally teach you that. I'm sure you could have learned something by just sitting down with that person for a session or two, not speed but maybe something else that you didn't think of. You can learn alot by jamming with alot of different people.