Step #1: Learn what successive means.
Step #2: Stop using filler words like 'basically', we appreciate the dumbing down, but you don't have to.
Step #3: Learning is very individualized. Most schools have a learning/education center with learning resources, tutors, etc. A fundamental part of undergrad is figuring out how to learn effectively. There is a certain art to taking tests and developing strong test taking skills is important, but if someone is struggling in a class or classes, it is unlikely that that is the primary issue.
Step #4: If you simply don't know what is going to be tested, typically professors will provide a syllabus. For the vast majority of classes in the sciences, there are only so many different types of questions that can be asked on each topic. The go to method for my students (when I TAed/tutored) was to simply setup every practice problem in the textbook as we went through each topic. Don't have to solve every question or write out answers to questions, but figuring out how to approach each problem is the most effective. I don't think I ever had a student not get an A in a class if they did that. Also, unless it is the first year a professor is teaching a class, there will be old tests floating around. While the questions will change, the topics will not.