Anyone can put up a web page, so it's important to view web sites with a critical eye. Keep these criteria in mind when using the web.
Who wrote the page and why?
Is the author a credible source? What are their qualifications?
Is the information accurate? Is there an opinion or bias expressed?
When was it last updated? Are there broken links?
Does the page cite its sources? Is the information comprehensive?
The domain can provide more information on the site:
.edu = educational institution
.gov = US government site
.org = organization or association
.com = commercial site
.museum = museum
.net = personal or other site