The tips begin at a different place in each module. The advice moves along with the stages of the course.
If there is a particular section you can never seem to finish in full lengths, make an iron rule: whatever happens, 15 minutes after the start of the section, you will have answered 10 questions. No matter what. Many students won't need this rule. It's tough medicine. However, for those that really do need it and use the rule, it cures the problem.