On: Five Principles for Choosing and Using Typefaces

[retlehs]

Also check out this free ebook from FontShop, Meet Your Type: A Field Guide to Love & Typography

http://www.fontshop.com/education/pdf/fsfinalbook_spread.pdf

Got it from http://www.fontshop.com/education/

[cisforcody → retlehs]

Ellen Lupton's 'Thinking with Type' is also an excellent resource for those who wish to have a basic understanding of typography and its principles. http://www.thinkingwithtype.com/