I got through the A320 suck-squirt course by first doing the
module on the CBT then opening FCOM1 on the same subject
(ie after doing CBT electrics I'd open Electrics in FCOM 1 and
study the crap out of it). Then I take pen and paper and draw
out important diagrams and write out notes underneath for my
future reference, then start the next CBT subject. It works!
During sim training I "invent" reasonably hard tech questions
likely to be asked on the final check. These would include any
flight on batt power, loss of all hyd, all intimate knowledge of
RAT and EMER GEN, loss of both FMGS, etc.