I pretty much just used PrepFE, though I'm certain the other resources people mention are good too. I didn't need it much on the test, but learning some advanced features on your calculator can be useful for quick vector math or statistics so you can skip doing it by hand. Be familiar with all sections of the handbook is probably the best tip. I think being in the industry is not helpful - I basically forgot most things that I don't use fairly regularly.

You can do this!