I agree with the above. Notes are a waste of time.
All I did was do a section and the progress test until I got 80%+ and then moved on. The emphasis is on momentum and moving through the subject matter swiftly and not getting bogged down with perfect scores. With a couple of weeks before the brush up course, I would do the lot again (quickly) and revise any questions I got wrong. Worked a peach.
The only notes that are valuable is an equation/formula dictionary and pin it to the wall. If you understand the sums, then the knowledge follows without trying.