The following are suggested links from Ellen Lupton, Forest Young, Typoteque and Fred Krughoff
Typography.com
The type foundry of Jonathan Hoefler and Tobias Frere-Jones
MyFonts.com
Useful site for buying and identifying many different fonts
PhilsFonts.com
Encyclopedic clearing house for all manner of fonts
Adobe.com/type
High-quality fonts from the industry leader in graphics software
Earthquakes and Aftershocks
Exhibition of posters produced at by CalArts Graphic Design Program, 1986-2004.
Elljbris
Designer Jos Buivenga offers some of his beautiful fonts for free.
Emigre.com
The original underground type foundry
Enschedé Font Foundry
Select typefaces by Dutch designers
Exljbris (Jos Buivenga)
Beautiful free typefaces from an independent designer in the Netherlands.
Fontshop.com
Prime source for typefaces created all over the world, including many independent designers and small type companies as well as bigger ones like Adobe and FontFont.
typographica.org
Typographica is a journal of typography featuring news,
observations, and open commentary on fonts and typographic design.
ilovetypography.com
iLT is designed to inspire its readers, to make people more aware of the typography that is around them.
Type & Media, the postgraduate course of the Royal Academy in The Hague, The Netherlands.
http://just.letterror.com/ltrwiki/TypeMedia
FontLab font design tool.
http://www.fontlab.com
Languages and Scripts
writing systems of the world.
http://www.evertype.com
Information on writing systems and alphabetical systems.
http://www.omniglot.com
database of languages and their character sets.
http://www.eki.ee/letter
The Alphabet Synthesis Machine.
http://alphabet.tmema.org
type foundry run by Peter and Johanna Biľak
www.typotheque.com