Considering Structure and Organization — Dartmouth University's Writing Center offers this useful discussion about strategies for organizing your essay.
In Search of Form— This page from the Paradigm Online Writing Assistant offers a variety of suggestions for organizing writing.
Organize Your Ideas — This page from the Guide to Writing a Basic Essay site offers strategies for both diagramming and outlining as modes of organizing information.
Quotations, Introductions, and Conclusions — Adapted from the 6th edition of Writing and Reading Across the Curriculum, this webpage provides a very comprehensive guide to working with these various elements in the academic essay.