I just took my CAPM exam today and passed thanks to this book. I highly recommend this book as well as their exam simulation software. Although the software is expensive, it is worth it in order to pass the exam on your first attempt.
First off, I probably would've failed the exam if I had to rely on the PMBOK guide alone. This book makes the material much easier and more enjoyable to read. The PMBOK guide isn't really written that well. This book will help in putting all the pieces together. Second, there is still a possibility that I might have also failed the exam if for not their exam simulation software. It has an abundant amount of questions that you can test yourself on within each section of the PMBOK; and then it will draw a pool of questions from each section when you take the full exam simulation (just like on the real CAPM exam). One thing I will note: the real CAPM exam questions aren't exactly like the simulation questions (although very close and similar). Regardless, it is still helpful do to the psychometric questions involved. The slight problem I ran into on the real exam was that often the questions were really bland and not totally descriptive. RMC points this out throughout her book, but even her test questions were still giving you realistic data in the questions, such as were you are in the processes, so you could properly select the correct answer. Many answers to the questions could have more than one correct answer, in which you have to know where you are at in the processes. Some questions will not clearly show where you are at in order to know which correct answer is BEST.
With that said, here is the study process I set for myself:
1) Read the PMBOK guide once thru which took about 2 weeks (about a chapter/day)
2) Read the CAPM Exam Prep Book once thru and took the practice quiz at the end of each chapter; 2 weeks (chpt/day).
3) Read the CAPM Exam Prep Book a second time and took the chapter exam in the RMC simulation software after the reread.
If I scored below an 85, I would reread key points, terms, and the inputs, tools/techniques, and outputs.
4) Took the full exam simulation twice. Her book says to make sure you score at least an 85% or more. (#2 & #3 took about 2.5 weeks)
5) Take the real CAPM exam.
Hope this helps the next person. The only other thing I might have done differently, would be to also briefly reread or lookover the PMBOK guide again as well.

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