In this course, you have module intros and agendas/objectives. All of those tell you which parts of the material to focus on, or study. Read these before you read the textbook or watch the lectures. They will tell you which information to look out for.
Useful links:
Metacognitive Study Strategies (UNC-Chapel Hill)
Studying 101 (UNC Chapel Hill)
How to Study (Cornell University)
Metacognition and Learning Strategies (University of Colorado Boulder)