What type of information can I find on websites?
Websites can be published by individuals, companies, or organizations and usually provide specific information about topics. Websites can help you find current information and websites are easily changed and updated. Be careful when reviewing information from websites. Often times, information on websites are not held to scholarly or journalistic standards.
Websites

American Mathematical SocietyFounded in 1888 to further mathematical research and scholarship, the American Mathematical Society fulfills its mission through programs and services that promote mathematical research and its uses, strengthen mathematical education, and foster awareness and appreciation of mathematics and its connections to other disciplines and to everyday life.

MathWorld: The Web's Most Extensive Mathematics ResourceWolfram MathWorld is an amazing mathematics resource with sections on algebra, applied mathematics, calculus, geometry, and much more. This is a frequently updated site with a search engine and several indexes for finding topics.

The University of Michigan Historical Mathematics CollectionThis collection contains the digitized fulltext collection of the University of Michigan's mathematics books published during the late 19th and early 20th century. Browsing the collection is available, as well as searching by keyword, proximity, boolean, and bibliographic citation.

Math ArchivesLinks to sites that have a significant collection of mathematical software; it also includes links containing information about mathematical software. Arrangement is by mathematical topiceverything from algebra, calculus, and geometry to complex analysis and fractals to art and music.

National Science Digital LibraryThe nation's online portal for education and research on learning in science, technology, engineering and mathematics.

Math Forum at DrexelComprehensive resource for Math education assistance. Contains handson web learning tools, lesson plans, and activities for prekindergarten through college courses. Helpful features are online lesson plans, divided by grade, and the Internet Mathematics Library which contains links to other math web sites. The Ask Dr. Math section is extremely helpful.

Mathematical Sciences Digital LibraryOutstanding resource for both instructors and students of mathematics. Organized into four primary sections, and future growth is anticipated. Featured links for each section are included on the home page, and numerous other resources are available within each specialty area.

lanl.arXiv.orgThis open access to eprints in Physics, Mathematics, Computer Science, Quantitative Biology, and Statistics is funded by the National Science Foundation and maintained by Cornell University.