Siochanai
You might slip a couple (or a few ) other books in between DuQuette and the Book of Thoth. I got a lot of mileage out of "The Qabailistic Tarot" by Robert Wang and "The Tarot, A Key to the Wisdom of the Ages" by Paul Foster Case when I was first exploring the esoteric side. I did read the Book of Thoth first, but it was kind of a big gulp to take all at once. These other books helped me to nibble away at it. A bit less chewing, as it were. Other authors to consider are Israel Regardie, Gareth Knight, and, for thorough explanations of the 22 paths, Frater Achad (a protege of Crowley) and Dolores Ashcroft-Nowicki. All of my examples are from the '70s and early '80s. Others will surely have more recent favorites. Also, some of them like Wang's book are probably expensive now.
Yea maybe a few more inbetween books and maybe a few extra drinks too lol *wink*
Really mind bending stuff and tons of contradictory information just makes it harder.