I have the book and never really read it through systematically.
It's true it's rich in kabalistic information and not so much what I am searching for, I still get so much out of this deck without the esoteric details behind (they still remain behind, and not upfront when I do readings!).
I will have to check it back again though and read it properly from one end to the other, it's small and should just take an afternoon or so...
I would say that if you do enjoy the deck and use it successfully for fortune telling (this being your main goal and focus) and are not a fan or looking for background in kabala and such, you may well keep going without it.
The descriptions of the images are apt and precise, but nothing an attentive eye and a keen mind would not grasp.