My exam is due in january 3rd,2011.I really need  help in the following topics:

Before the actual exam start i probably get 15minuates for becoming habituated with the exam environment.In that 15minuate session,| want to utilize sometime(say 5-6m) in writting the formulas.Is it a good decission?Can anyone please give me an idea about the buttons used in the final exam screen and description,so that I can be familiar with the  screen and utilize my 15m time in a different way.Please upload any comment as soon as possible.

Thanks in advance