First truck was a 1978 Chevy crewcab long bed. Learned how to parallel park in that thing.
I can parallel park a truck with a trailer now adays with no problems. Then again I use to hotshot for a drilling company and I would drive with a gooseneck trailer all day and had to back it up in tight spots.
I was 6 when I first drove though, but it was private property in a old oldsmobile diesel car. 7 I was driving with a standard truck but my dad worked the pedals and I would work the steering and shifter.
It's not hard to drive, just be a defensive driver, always be aware of your surrounding, and make sure your mirrors are set properly cause you can't hear when a car comes up on you. Also don't drive too close to the person in front of you, cause they will slam their breaks on you.
Other then that have fun!