If it's like the real tarot, the specific meanings of the minor arcana don't make as much sense together as you'd expect them to. Probably because, like all fortune-telling, tarot readings are designed to be vague and nebulous enough that they can take credit for predicting most anything!

The EE1 is basically the only evidence we've got that the Deck of Sixty is a thing, so we can't really give you more information than you yourself already has, that info just doesn't exist. The Deck is sort of elaborated on there, mentioned exactly once in the AST questline, and then the entire rest of the AST questline does the thing every piece of media with a tarot reading does: ignores the minor arcana because the major arcana are much more interesting and magical, as well as much easier to take seriously. (Seriously, drawing the equivalent of the 3 of Diamonds really makes it clear that the tarot deck are just playing cards, and really undercuts if media's trying to do a serious fortune telling.) Unfortunately, the deck only having six major arcana means you probably can't pull that trick yourself if you're doing a whole lot of tarot readings; repeats are gonna start happening REAL fast. But that obscurity also gives you a lot of freedom. As long as what you pull mostly fits what the EE1 says--it doesn't even have to stand up to scrutiny, I guarantee people will not check--you can basically say whatever you want and come up with whatever justifications fit for you.

Remember, roleplaying is mostly a game of improv and talking nonsense, rather than stringently parroting In-Universe Facts. You've already got everything we can tell you; from here on out it's all your fun to make.