How do you track the books you’re reading?

I don't really "track" the books I'm reading, although I'm not sure what your precise definition of tracking is.

I know some folks use Goodreads. For me personally, I prefer reading physical books over ebooks. I read one book at a time, and no matter what all is on my plate, whether I'm traveling, extremely busy with work, tired, etc. – I always read before going to bed. It actually helps me fall asleep better, and my time laying in bed awake is much more productive getting through my books.

I blog [0] when I start a book and when I have finished it.

[0] https://plurrrr.com/tags/2021/book.html

GNU Emacs Org Mode has a TUI for spreadsheet and more.

Goodreads

I use a bookmark that my kids frequently remove, so just kind of remember where I am up to in any given book.

I don't. Should I?

I go through at least 3-4 books a month. It sounds exhausting to keep track of all that. And for what?

I use a kindle and have never legitimately read more than 2 books at once (even that’s rare).

Normally in a stack next to the bed, or strewn about in eyeshot, with dog eared pages.

Obsidian, Joplin, Logseq, all mixed