Best advice, already stated here and require zero skill:
Be early, 15 min. Should do.
Attitude- never have it.
Energy - be ready to work! This trade is a damn privledge, not a right!
Be prepared - still use this, what's an apprentices job description? To make his or her mechanic look good.
Items that should be on your person each day include:
Notebook and pen/pencil
Channel locks
10-1 screw driver
Tape measure
Electrical tape
With those simple items you can do a surprisingly large amount of tasks. Again each dept. may have a few different items to add in, such as service repair may want you to have 1/8th inch tweaker and door pick on you as well.
Nobody expects a new hire to come in knowing anything, so don't pretend to. Effort and attitude will get you as far as you ever wanted to go. I will spend years training the right sort of person, won't spend 15 minutes with the wrong kind. Good luck, work safe, and work within the agreement.
For anyone curious, Local 21 in Arlington TX had 140 people pass the test. Won't know the interview numbers until next week.
Edit: I do have to say though, dudes who may read this in the future, I know we are not trying for a CEO Position at a fortune 500, but at least wear a button up. T-shirts and tennis shoes are not a great idea.
Oh cool, didn't know how far they spread out.