At first it seems okay. Just some quick tips of mine. To avoid repeating "it will help you" so much, you could redo it to:
There are a lot of tips that help students to have a greater learning performance. In my opinion, three are essential:
(1) take a look on the subject before the class, to help to follow the teacher reasoning (at the class);
(2) make notes during the class, note-taking is helpful to remember some details that are not in the textbooks; and
(3) review the lesson after the class, in order to fix the recently acquired knowledge.
By the way, congrats on your piece of text, your writing level is very good right now!