http://www.winsor.edu/library/citation.htm
Examples of citing print and electronic sources.

http://www.lib.duke.edu/libguide/citing.htm#websites
Duke University's guide to citing print and electronic sources including MLA, APA, and Chicago, with clear and cogent examples.

http://www.ipl.org/teen/aplus/linkciting.htm
Purdue's guide to research, writing, and citing sources with sections on plagiarism, paraphrasing, and using quotations.

http://www.ncsu.edu/midlink/citing.html
Guide to evaluating the quality of online material, information about permissions for posting work on your website, and guide to citing sources.

http://catalyst.washington.edu/quick/ppt.html
A detailed guide to creating PowerPoint presentations in an easy-to-follow format.

http://www.emailreplies.com/#top
A succinct and useful guide to e-mail replies; designed for business use, it nevertheless is useful for students as well, especially the tip that says, "Read the e-mail before you send it."

http://www.webfoot.com/advice/email.top.html
A beginner's guide to effective e-mail. Covers many useful topics including formatting, paragraphing, line length, subject fields, careful use of pronouns, etc.