(un)Enlightened English: A blog-based site with explanations of grammar, commonly confused words, and other forms of writing and academic advice.
Grammar Girl: Provides “quick and dirty” grammar advice.
The Online Writing Lab at Purdue University: The most comprehensive online writing lab in America.
- Purdue’s MLA Guidelines: Detailed explanations of MLA citations.
- Purdue’s APA Guidelines: Detailed explanations of APA citations.
Google Scholar: Scholarly journal excerpts, newspaper articles, legal documents, etc.
Google Books: A source for online public domain texts.
Bartleby: Another source for online public domain texts.