Hi, my name is Anna. In a month we are taking final exams. What can i do to prepare and study?

If you have a month to go, just review all the material you have covered. Try exercises that seem unclear, check online for help. Google is your friend. You can get examples and viewpoints different from those in your text.

Make sure you know how to solve the problems, so you can spend your time in the test actually working out the solutions, now wondering what the heck to do.

Two days before the test, take a deep breath and relax. The night before the exam, get plenty of sleep, and eat a small breakfast the next morning. At that point you have done all you can do, so stop worrying.