I passed the Sec+ today with a score of 850. I felt like I knew the answers on most of the questions and some were just worded tricky.
My main book of choice was
CompTIA-Security-Certified-Ahead-SY0-301/ by Darril Gibson. It is an excellent resource and an easy read. It is all you need to pass the test but I would also make some flash cards and definitely make sure you know all the acronyms and can say a few sentences about each topic. I also utilized the Security+ Labsim content through WGU. I felt the Labsim was really well done but provided more detail than what is really needed for the test.
