I barely (if ever) used the Camara book for studying, but absolutely abused it during the practice and live exams.
I also recommend the Complex Imaginary exam books. I didn't have time to use the NEC code drill book and passed all the same, but I've heard good things about it.
You'll definitely want a copy of the NESC. It'll turn a couple of questions into easy layups.
Track down a good circuits textbook, a good power systems textbook, and a good machinery (motors and generators) textbooks. I brought the 7th edition of Electric Circuits by Nilsson and Riedel, the 4th edition of Power Systems Analysis and Design by Glover, Sarma, and Overbye, and Electrical Machines, Drives and Power Systems by Wildi. I don't know if they're the best or if the newer editions are more helpful, but that's what I had.
Be familiar with your resources. Tabs are definitely your friends! Apply liberally. I tabbed any practice exam questions that I had trouble with and cited where to find the correct way to solve the problem and brought the practice exams with me. For the NEC, I used these tabs and added my own.
Speaking of the NEC, try using the applicable NEC Handbook as opposed to the NEC Codebook.
@AAGR2013 pretty much covered the rest
Keep your head up! You'll get there. This forum was a huge help to me and I'm sure you'll find the same to be true for you.