I've found what I consider to be the most efficient study method. I don't expect this would work for everyone, but has worked for me so I thought I should share.
First off, the only study material I've used is the Wiley books (which can be bought in a set for relatively cheap from Amazon).
Now for the strategy... First thing, before doing any reading, I answer all of the multiple choice questions at the end of each module. I do this very quickly and don't spend more than a few minutes on any question. If I don't know it, I flag the question and move on, and I also flag the question if I was unsure and had to guess.
At the end of each module, I review the questions I got wrong and the ones I flagged to make sure I understand why I got it wrong. I usually find the brief descriptions in the answer section sufficient, but I will go to the reading material if necessary.
Once I've gone through each module, my strategy changes slightly. I pick the module I was weakest in and I do the MCQ for it again using the same method as before (flagging guesses/skips). And again, I review any questions I got wrong/guessed/skipped (a bit more thoroughly than the first time). Then I move on to my next weakest section and repeat. Note that my 'weakest' section is constantly changing as new scores replace old ones, so I may end up doing one module four times, and another module only once.
I continue this process until I get at least an 85% in each module (or I run out of time). If I have time to spare, I repeat the process with the practice exam at the back.
I've found this method automatically forces me to spend more time on my weaknesses, and prevents me wasting time on my strengths.
Overall, I found I can go through 6-10 modules per weekend, and maybe 1-2 modules per weeknight in a pinch. You may have noticed I do not do any practice simulations. I've found that the same info is covered in the MCQ and that doing MCQ is a more time efficient method. I also do very minimal memorization unless it applied to several MCQ in a given module.
I hope someone finds this helpful. I would have saved myself weeks of work studying for my first exam if someone had suggested this strategy to me.