I agree with most here, i will say, stick to Audit before moving on. Also at this point, if you use Becker, Audit is the only section i did not supplement with anything else. Becker is dead on on Audit. So i would not waste the extra time and money to get familiar with another material. And time management is crucial, if you truly don't know an answer make the best educated guess (usually by elimination) and move on. You should not waste more than 2/max 3 minutes on a question.
Also I left this in another post and copied it here, and what i believed is the most important advice i can give you.
What saved me on audit is this. I got two simulations where i knew nothing about. The first time i took audit i blanked and left two sims without answering but passed with a 75, but it expired so i had to retake it again. The same thing happened where i had two sims for concepts i have never heard about, but guess what this time i did not blank and i used the research tab. They were very specific concepts with very unusual specific words, so i typed in those words and use the “contain only” “within GASS” on the research section. And guess what a table with 3 columns was the exact replica of the SIMS and all the answers were right there. I now realize that the examiners know that we can't know everything, but like in real life, when we don't, we will have to research that. Just become more than familiar how to use the research tool in an effective way so you don't get dozens of articles and know how to narrow down the queries.
FAR: 80
AUD: 81
REG: 78
BEC: 76