Pay attention to the kind of information you are looking at, and think critically about what you see.  Is the website you are looking at new or old? A blog or major news outlet? A commercial site? You will have different uses for different kinds of information.

Guides to evaluating web content:

Internet resources that contain scholarly and trade journals, as well as other useful and authorative data

• IEEE Digital library (http://ieeexplore.ieee.org/Xplore/home.jsp)

• CSC Open Access Journals (http://www.cscjournals.org/)

• Pew Internet Foundation (http://www.pewinternet.org/)

• Directory of Open Access Journals (http://www.doaj.org/)

• Google Scholar (http://scholar.google.com/)