If we're talking about specifically occult books, I own just a few physical books so far. The Exorcist's Handbook by Josephine McCarthy, Initiation Into Hermetics, the Fairy Bible, and Herbs n' Things. I'll definitely buy more at some point, but right now my focus has been less on reading theory/instruction, and more on actually practicing some stuff. The problem I also often have when it comes to hard copies of occult books, is only being able to read them when nobody else is in the room. Otherwise people are always just like, "Whatcha reading?" Then I'm in trouble if I don't come up with something fast. I suppose this won't be a problem once I cease to live with a bunch of judgemental normies I gotta constantly hide shit from.
When it comes to books in general, though, I own so many dozens of them that I've run out of bookshelf space. Some are in boxes, which I really need to take care of and get onto floating shelves or something. Most of my books are fiction, lots of fantasy books. But I've also got some YA and sci-fi/historical novels, manga and nonfiction. Particularly any subject that I've ever been obsessed with, I'll have a book or two about it. Hard copies of books are just...easier for me to read than ebooks, for some reason. Being able to physically touch it and flip the page is a different experience. And I find it more convenient to not have to screw with stuff like zooming in on PDFs that cram too much on one page.
I'm not able to read as much at once like I used to, because the restlessness really hits hard. But there will be periods where I've got both the time and the inclination to read, often during the winter when more in that "cozy" state of mind. There have also been books or series I come across that just get super fucking addictive, and it's like I'm snorting the book in one sitting or some shit. The Shades of Magic series was the most recent case with that, and I'm fucking sad now because I finished it already. However, the author has announced that she's working on a new trilogy for the same universe, so they can absolutely shut up and take my money when the first book comes out.