Brian Schrader mentions the A Very Short Introduction books in a blog post about learning:

The books are, as expected, very short (~100 pages) and cover a quick survey of the topic at hand and its various sub-disciplines. They’re approachable, quick to read, and the chapters are organized by discipline.

I’ve seen these little books many times and sometimes flip through them in a bookstore. I think I will pick up a couple of them. Great idea to have approachable books that are longer than a blog post or AI prompt, but not as long or dry as a textbook.