Ask Questions, Ask Questions and Ask More Questions. I know it seems obvious, but it is so true, if you do not ask questions you will never know the answer. No question is a stupid question! I know sometimes I need information reiterated more than once, so I continue to ask questions until I understand. Do not be afraid to ask, just because one professor/supervisor may want something one way does not mean everyone does. It is better to ask in the beginning for clarification or even if you get stuck in the middle of something, do not wait and do not assume either! Assuming gets you in trouble and you can never have too many questions.
"Sometimes questions are more important than answers"
~ Nancy Willard~