Here is the full IPA chart along with sound files.

Language Log is a blog jointly authored by several prominent linguists. It's a highly readable linguists' take on contemporary language issues, and much of the technical language employed there should be accessible after taking this class.

Wordnet is a web interface to a semantically sophisticated English lexicon.

Two highly regarded popular books on linguistics are The Language Instinct by Steven Pinker and The Power of Babel by John McWhorter.