The tips begin at a different place in each module. The advice moves along with the stages of the course.
At the start of review, many students open the physics book and get to work. They move forward a chapter at a time and get to biology in several months. Imagine you were building a neighborhood. You wouldn't clear the first lot and finish the first house then extend the road and build the second house. You would start with a survey. Skim all the conceptual materials in your MCAT books from beginning to end, spreading the task out over the first two weeks as you begin content review. Learn the shape of the whole knowledge base at the start. Prime and structure the knowledge base at the beginning.