If you have trouble doing it, ask for the lab assistant to help you, or find someone else who knows how the computer works and get them to teach you. When you open the files, there are three or four different worksheets in each of the workbooks. Click the mouse on the name of the workbook to move from one worksheet to the next.
Students frequently ask for sample problems.
Click HERE for recommended problems from the textbook. Some of these will be assigned as homework, some will be worked in class, some will appear on exams. In addition, in some chapters we will work problem sets in class, and I would recommend that you review those prior to any exam. They will be posted as we go along.