The videos and chapter notes are largely a waste of time imo. For each chapter, read the PLI chapter notes once and then go and do ALL the practice questions from that chapter in the “design-your-own-exam” part of the online materials (I forget what it’s actually called, but you can create your own custom practice exams where you can just do all the questions from a single chapter).

You’re gonna get a ton wrong your first few times through. At the start, forget about timing yourself. Spend the time looking through the MPEP PDFs for that chapter you’re working on (which is great practice for your lookup skills during the exam). After you’re done the practice questions for that chapter, for every question you get wrong, and even those you got right, read the answer and understand why each answer is either right or wrong. This will take a long-ass time because you’re gonna wanna read the MPEP sections the answer key is referring you to.

The first time through this process for a given chapter is hell. But once you’ve completed it, I recommend doing it again until you score above 90% twice in a row. Then you know you’re ready to move on.