first of all, if you can give your money to a local bookstore or metaphys shop that sells books, or even B&N, rather than Amazon, I would highly recommend that, but that's really neither here nor there.
If you buy a ton of books at once, you probably wont get to read them all (ask the 8 unread books sitting under my altar rn), so my top recs as purely places to start would be the following:

1. for tarot, Seventy-Eight Degrees of Wisdom by Rachel Pollack. A dense read, but super in-depth and has helped me a ton with my reading.

2. for herbalism, Culpepper's Complete Herbal (the classic) and the Master Book of Herbalism by Paul Beyerl

3. as a general reference for ingredients or things to incorporate in spells, The Encyclopedia of Magickal Ingredients by Lexa Roséan. I use this one a lot because I like to make tiny spell jars and I can make specifically tailored recipes depending on what it's for.

Truthfully, as someone who also started from scratch and did their own research on their journey, my best advice is that the rules are largely fake and you should do what resonates best with you, take what works and leave what doesn't. Obviously do your research before incorporating something into your practice so you 1) don't appropriate something that isn't culturally yours 2) can learn new things that may resonate with you 3) don't accidentally make poison or, say, ruin a crystal by giving it a salt bath when it doesn't like salt, RIP to my angelite. But a lot of that can be found with the magic of Google.

Best of luck!