What not to do... don't let the job (or people) phase you. Don't do anything that your unsure of the outcome without asking for help. If it's a good crew, they are going to be spending time and effort watching your back and mentoring you anyway, so asking about what you don't know will be welcomed.
I have always done well by asking myself daily "What can I do to make my bosses job easier?"... the problem for new guys is they have a lot of bosses. My advice is to do the jobs no one else is jumping up to volunteer for whether it's your turn or not.