On my first trial I registered for online class and relied on what was taught in the class, but the material they provided was not sufficient.
So this time I decided to study on my own. I did alot of problems from ppi quiz bank, it really helped, and also usedFE electrical and computer by Michael R. Lindeburg .
Download NCEES handbook and use it when you solve problems. Let me know if you need any help and study materials.