Before relying on the information provided by a website, examine and understand its purpose. While the purpose might not affect the accuracy of the primary source material it contains, it might indicate that the material has been altered or manipulated in some way to change or influence its meaning.
In general, look for websites with a non-biased, balanced approach to presenting sources. Websites produced by educational or governmental institution often are more reliable than personal websites, but government sites may be subject to propaganda.
Use the PACAC method outlined in the RESEARCH HELP pages to guide your thinking and help you ask the right questions about Purpose, Authority, Currency, Accuracy, and Content.
More tips from the Reference and User Services Association are available HERE.