For me using a reverse camber board helped me on balancing the board at first. Perhaps you may want to try this as it will be much harder to catch an edge. As you progress you will find that you want more camber though, well for me at least.
Don't let fear get in the way. Sometimes you have just have to say "Fuck it" and just go. I started out at 35 and have been riding for 2 season now.