For first time tutors, I would say that while you are there to help a student with academic work, it is extremely important to remember that this student should be treated with respect. That way it cuts down on chaos and confusion. I think that kids really appreciate consistency and in the end I feel that the tutor does also. I think that have a consistent relationship with the students will help them learn better and the tutor teach better. A lot of kids are embarrassed to ask for help, so you have to walk around and ask everyone how they're doing with their work.
Scratch paper is really useful, as is a copy of the worksheet or whatever.
If you write the things you said down on their worksheet or on another piece of paper and leave it with them it helps a lot. Maybe ask to see samples of previous homework assignments, tests, etc.