Some of it is not always that easy to grasp at first sight but you very quickly get your head around all the new information. I woulden't say it was boring and certainly not dull, more interesting but overall enjoyable.
I can only comment on the following as I'm doing module one at present.
Instruments - easy, interesting
Radio Nav - moderate, interesting
Aircraft Systems - moderate-easy, interesting
POF - moderate-easy
Law - easy, but lots to learn
Electrics - moderate
This is all based on a full-time course which I would thoroughly recommend and of course, my own personal ability.
If you take the plunge, good luck.