- Buy your own basic set of tools. (if not provided).
- Ask plenty of questions.
- Familiarise yourself with how the aircraft systems work (read description/operation in the AMM each time you perform a new task). A couple of apprentices I work with are regularly performing a removal/replacement without knowing what the component does.
- Be able to take constructive criticism and learn from it.
- Try and enjoy your job.
Just a few things on an endless list that I'm sure others will add to!