Ask HN: What is your best book or tutorial recommendation to learn typography?

I learned a lot from here http://practicaltypography.com/

The Elements of Typographic Style is what I'd recommend.

Also, A Type Primer is quite good. :)

Back before there was a graphical "web" and all the rest, and when typography was generally relegated to a small subset of professionals, I learned quite a bit from Don Knuth's (yes, that Knuth) TeXBook. He's an entertaining writer, as well, and it was an enjoyable read.