With the many things I've done in my life, this is BY FAR the most difficult. And I'm having to do it on my own, with no "school". However everyday is a new challenge, and its fun. I have alot different goals than most here. I'm just hoping to pick up some part time contract work in the future. No matter what it is, your never too old. If i could do this stuff for 12 hours a day I'd do it.
That's the way to do it - tear into it. You've got the right attitude, you'll do fine.