Linguistics resources for September projects

A reading resource list for your language projects! I'll add more to this list as I find more favorites.

This is a brief and thorough overview of the whole study of language. Enjoy!
http://www.ielanguages.com/linguist.html

A wonderful open source textbook: http://en.wikibooks.org/wiki/Introduction_to_Linguistics

A simpler introduction to English, from wikijunior: http://en.wikibooks.org/wiki/Wikijunior:Languages/English

 Totally awesome infographics on all kinds of topics:
http://visual.ly/categories

A 50 minute documentary about the origins of English
http://www.youtube.com/watch?v=oaWOsFRUUy8