This one is short
but see the collection of additional threads at the bottom of that thread.*
Also, Bringhurst: http://www.amazon.com/Elements-Typographic-Style-Robert-Brin...
*I like the "local masters" concept Tufte has (full disclosure, I helped prototype it), and Wikipedia does something similar.
Start off by reading Typography for Lawyers and iA’s post “Web Design is 95% Typography”. Both links have great advice and talk about the fundamentals of typography and type on the web.
If the last links perked your interest than I recommend picking up The Elements of Typographic style. It is a great bible on the subject at the macro level.
For example: there are 5 typography related 'modules' in the top level list.
In module 1. 'Dive into Typography', there are 6 different resources within.
From the one of those 6 resources, here are a list of materials mentioned:
* book - Inside Paragraphs: Typographic Fundamentals 
* book - The Elements of Typographic Style 
* book - Stop Stealing Sheep & Find Out How Type Works 
* post - Unicode Beginners Introduction for Dummies Made Simple 
I've found this to be the norm for most posts, they may not cover absolutely everything about a single topic, but they will most definitely point you to somewhere that will.
 -  - http://pythonconquerstheuniverse.wordpress.com/2010/05/30/un...
 - http://pythonconquerstheuniverse.wordpress.com/2010/05/30/un...