A little background of the company, it's a small-medium sized accounting firm that likes to consider themselves a "full service" type of firm. Which means they do a little bit of auditing, financials, taxation, consultation, etc. and they mostly work out of the companies who hire them. They have pretty well known clients but they are by no means close to the big 4 in size. My questions for anyone willing to lend some advice are:

1) What can I expect on my first day at the job, will I need to brush up on my accounting knowledge? It's not like I don't know accounting, but I feel like most of what you learn is really hands on and what they teach in school can't compare to being out there.

2) Other than the obvious, show up on time, stay overtime if I had to, what else could I show that I would be the best candidate?

3) What questions should I be asking without looking like I need my hand-held along each steps? I heard I should ask questions like..."Why is the process like this? Is there a more efficient way we could do it?" But I don't want to ask too many questions where they find me frustrating.

Edit: I received additional information that I will be working together with a manager in the firm on a systems implementation project that will last two weeks. I am hoping that maybe someone has some insight, like if you yourself were a manager, what is the most you can expect out of someone new or even someone interning. Any advice would be greatly appreciated.