Here is a list of links that have provided me with a great deal of information regarding the composer we all praise today, Chopin. Some of them also have recordings, sheet music, information about other composers as well or many other things regarding classical music. :)
Forum Members' Sites...
Excellent site devoted to Charles-Valentin Alkan
Wonderful site for amateur pianists recording exchange
Very detailed biography
Description of every etude
An exhibit in the University of Chicago Library
Extremely informative site, thanks to Amnesia. :)
Chopin's complete repertoire (Click Music at the top right)
Many recordings of the Romantic Period
MIDI Collection of Chopin's complete repertoire
Music Term Dictionary
Site with recordings, essays, quotes, books, methods...
Ample collection of sheet music of varied composers - Sheet Music Archive
Drop me a line if you want to see some more sites posted up here. :)