Experts

About.com was founded in 1996 and acquired in 2005 by the New York Times Company. About.com contains over 570 "Guides" to many subjects, grouped under "Channels." Guides range in topics as diverse as Cholesterol and Travel.

30,000 professionally written How To articles in a wide variety of subjects. This is an interactive site and expert readers are invited to contribute.

This website explains and details the manufacturing process of a wide variety of products from daily household items to complicated electronic equipment and heavy machinery. There are illustrations and diagrams to accompany the text, which is intended for a general audience. Also on the site are biographies of famous inventors. Searchable by product.

Source for finding answers to questions of any sort. Provides subject categories that include arts, beauty, pets, "best of questions," and many more.