When I was getting ready for ILT, I put together an online quiz system (
www.NRCprep.com) that randomly generates subject-specific quizzes from data imported from NRC's past PWR Generic Fundamentals exams. Since then I've expanded it to also generate full GFES exams. It also has all the DOE's Reactor Operation manuals covering everything from Reactor Theory to Mechanical Components, all searchable for easy reference. It even gives you instant access to the GFE formula sheet, steam tables, and a zoomable Mollier diagram.
Once you've taken a quiz or practice test, you can download and print a PDF showing which questions you missed, for later review.
As you might guess, it was a lot of work, but it was fun to do, and it was a help to me and my ILT class.
I wanted to get the word out so others can benefit. A good foundation in GFES is crucial.
Hope this helps!