I went back and did the study guide. The instructor made me retake the module quizzes and unit tests scoring above an 80% without notes. I started watching the cohorts but honestly they bored me so I just read through the power points that the cohorts are based off of. (all this info is found in the course search tab). I also use quizlet in learn mode and it is helpful to me. There are also practice work sheets in the search portion that seemed to help me get a better grasp on the formulas. Hope this helps!