Notes for Parsing & XML lecture
Wikipedia page about regular expressions
Wikipedia page about Backus-Naur form
. That links to Extended Backus-Naur form, which is pretty much what the XML standard uses, and to Augmented Backus-Naur Form, which is what the Internet RFCs use.
Lex & Yacc Page
has documentation about Lex, Flex, Yacc, and Bison.
web site has more about Unicode than you probably want to know.
is a reformatted version of the Wall Street Journal that you can use for experiments, but is not the actual version Andrew will give you.