Oh! You'll learn astrology... a lot of astrology. But it'll be
real astrology as it existed for a couple thousand years, not the modern psychological (IMO) woo-woo horseshit.
Bottom line: any book or website that spends a lot of time talking about the signs and very little on the planets... anyone that likes to talk in vague generalities and platitudes, but eschews hard, provable facts... any horoscopes that seem relentlessly positive and mushy while avoiding negatives, details, or verifiable predictions... any definitions that mention "empowerment" or "mood" or "affirmation" or "archetype" or other empty new age buzzwords are suspect, probably worthless, and to be avoided.
Now the terrible thing is that the book that covers this GD astrological material doesn't exist. Annoying, right? To be completely egomaniacal I'll add that (after discovering this and several crazed years doing the research for the Liber T) I'm writing the damn thing myself out of frustration, but it isn't anywhere near done. I'm actively working on it though, in between actual gigs and I have made a ton of progress. The research has totally changed my worldview, too. And for folks who think astrology and Tarot have nothing to do with each other, I'll point out that Astrology (not QBLH, not Heresy, not Alchemy) is the one unquestionable verifiable source of symbolism in the earliest decks... to wit, all the planetary symbols throughout the Visconti-Sforza trumps. And small wonder: three of the trumps are
celestial bodies. That's not to say any of the attributions are clear or even definite, but rather that Astrology was so much a part of the Renaissance worldview that it is deeply woven into the fabric of Tarot, however unintentionally.
Also know that the GD Tarot books available REALLY overfocus on Qabalah for a lot of reasons, mainly having to do with Victorian magick and the available scholarship of the time. Most occult authors don't bother doing any actual homework of their own, content to either swipe it or wing it. Likewise most are either lazy or crazy, so they're either relying completely on someone else having done the work and regurgitating blindly OR they're just making up "discoveries" wholesale and calling them (ahem) blinding revelations that require discarding all known attributions and only discernible within intentional "blinds" that conceal the capital-T Truth that will shake the world to its foundations.
Notice that BLIND is the recurring theme of the two above models. Another reason there are so many crappy books in the world!
The way I see it, whether you won't open your eyes or decide to gouge them out, the decision to not see is willful. I'm not naming any names, but I'm sure you can connect the dots.
But trust me when I say that the astrology you'll pick up from the Thoth is amazing, and can be life-changing if you keep digging into it. Hang in there, missy! I'll help as much as I can, and maybe by talking it through with you it'll force me to get off my butt and get this thing written.