I concur with Matt above!
Personally, I find it easier to read printed matter rather than read from a computer screen. So I read the written study manuals, makes notes as appropriate and transfer the very important bits (i.e. formulae) to a small notebook which I refer to regularly until the stuff gets into my thick skull.
When I have finished a subject, I email through the phase tests and practice with the question bank; that, and ppruning, is about as much PC based work as I my eyesight can cope with.
If you find it easier to read from a monitor, then use the CBT programmes but I find it easier to read from paper! P'rhaps it's me age! The paper manuals also mean that I can relax on the sofa and have a glass of wine!
Cheers
Whirls