Good writers are also good researchers. They know the best resources available for a whole host of content and language issues. One resource that academic writers might find especially helpful, whether they’re high school, college, or graduate students, or, for that matter, business or technical writers, is the website listing by the International Writer Centers Association:
http://writingcenters.org/resources/writing-centers-online/. Available there are links to writing help from universities throughout the world. Look at the bottom of the list for references for English-as-a-Second-Language (ESL) sites.