For Writers

Academic writing

• The best overall academic writing website I know of is the Purdue OWL.
• Many university writing centers have excellent resources. I am partial to my alma mater and former employer, the George Mason University Writing Center!
• EAP Foundation has useful resources aimed at college students and advanced non-native English writers.

Grammar and Usage

• Grammar Girl explains the nuances of English grammar in an accessible and interesting way.
• The Blue Book of Grammar and Punctuation is an excellent book, and the website is quite useful too.