Hi Simon,
My strategy was to complete one chapter at a time by reading the PDF first and then reviewing the video(s) second. That order helped reinforced what I read as well as clearing up any confusion that I may have had with the subject. Also, I took a few notes along the way.
I then attempted the lab for the chapter, if applicable and referred to my notes, the PDF, and video(s) for reference as needed.
Hope that helps and good luck!