Are you an ESL student? This page will link you to free resources:

Randall's ESL Cyber Listening Lab: This site contains about 75 dialogues and stories sorted by level of difficulty (beginning to advanced). It also includes Academic Listening lectures and conversations with video.
http://www.esl-lab.com

The ESL Study Hall: This site constructed by a professor at George Washington University is very simple to navigae. It provides good links to all ESL related areas.
http://home.gwu.edu/~meloni/eslstudyhall

The Longman English Page: This page contains reading selections and writing exercises. Here you can conduct a simulated web search, learn how to write a resume and cover letter, or try poetry writing.
http://longman.awl.com/englishpages

Advanced Composition: This site provides help with writing an academic paper. It gives examples of different kinds of essays (comparison, contrast, cause/effect, etc). It also gives practice on specific grammar points. It has examples of essays written by teachers and students
http://www.ebaack.com