the only advice you need is that if you can drive, then you'll get your license. if you can't/shouldnt be driving, then you wont get it. i hated when kids in my HS used to blame the testers for failing them, yet they clearly cant drive. just relax, its a 10 minute drive that will be over before you know it. you'll be fine.
as far as permit, just take the practice tests. in NY I think I had 1 question on the permit test that wasn't on the practice one online. I just took them a bunch and eventually itd give you the same questions over n over.