I took about 7 weeks to prepare for each section, except BEC. I decided to knock out all 4 sections in 2 windows, so BEC only got 5 weeks.
My process was to copy the ninja notes by hand to a notebook, then copy them again from the first notebook to a second, rewording as much as I could so I had to think about what I was writing. If I had time on days during the note-taking phase, I would do MCQs from the topic I took notes on, taking notes on any I got wrong.
After the second round of notes was finished, I did tons of MCQs and took detailed notes on the ones I got wrong so I understood why I was wrong. Even if it was a simple “RTFQ”. Mix in some sims for variety. If I needed to up the challenge, for calculation problems I'd cover the answers.
About 2 weeks before the real deal, I took a practice exam to get a feel for the pace I needed to work at – not to gauge my progress.
I listened to ninja audio during my drive to/from work. Mostly supplementary.
AUD - 91
BEC - 85
FAR - 91
REG - 92
CPA, CFE
Passed all 4 CPA exam sections with Ninja Notes/MCQ/Audio
Licensed CPA
Passed each section on the first try with Ninja Notes/MCQ/Audio