Useful links

Writing guidelines

http://www.writing.engr.psu.edu/handbook/visuals.html 

One stop resource for technical writing information

http://www.technicalcommunicationcenter.com/category/blogging/

A social network of technical writers

http://technicalwritingworld.com/

English grammar

http://www.bbc.co.uk/worldservice/learningenglish/language/

http://www.nonstopenglish.com/

English dictionary

http://www.thefreedictionary.com/

 ------need to add more, need  your help