How to evaluate what you find

Reliability

Is it clear who is the author? What are the author's credentials? What qualifications do they have for writing the piece? Are they backed by a reputable or traceable organisation?

Information that does not conform to these criteria is not necessarily flawed or unreliable, but you should use it with caution. Remember that the web in particular is open to anyone who can write anything they want. Look carefully for evidence of bias, omissions or unsupported statements of "fact".