All these are free for PMI members. I reviewed all of them, but like I said, I became familiar with them, not really to try to learn it:
Practice Standard For Earned Value Management
Practice Standard for Project Configuration Management
Practice Standard for Project Estimating
Practice Standard for Risk Management
Practice Standard for Scheduling
Requirements Management: A Practice Guide
PMI Lexicon of Project Management terms
I also read PMBOK twice, Rita's twice, and Head First
In the simulator, some answers reference various material on the web. I read those too and looked those terms up further. I studied other folks Brain Dumps.
I took five months to study with all this, so I had time.
I hope this helps. Just realise that many questions can be answered through the PMBOK and others cannot, while a lot of answers require understanding the concept rather than an answer that can be found in a book.