The Purdue OWL, or Online Writing Lab, has built up a solid reputation as a resource for writing MLA and APA citations, but it has so much more to offer than that.
If you have never done so before, check out the academic writing section, which includes a variety of in-depth articles that can help you to craft strong essays. Need to review argumentative structure or thesis statements? Looking for some help with sentence variety? It's all there.
No matter what the writing assignment, be it a research paper for school or your SAT or ACT essay, this one-stop-shop for everything related to writing is sure to prove useful in high school, college, and beyond.