Calumet College Library: http://www.ccsj.edu/library/index.shtml

Purdue University Online Writing Lab: http://www.owl.english.purdue.edu

Related Links:
1. Dave’s ESL Café: http://www.eslcafe.com
2. Boston College: http://www.bc.edu/a-z/worldwide/
3. University of Kansas: http://www.writing.ku.edu/students/guides.shtml

Vast number of links to various sites for grammar usage, writing samples, critical thinking strategies, etc.