Once you have gathered your information, you may want to print out at least 2 of the sources you found. This will allow you to read and judge the information at a later time.
Ther are several things to consider when determining the validity (or trustworthiness) of your source of information. Be aware that it is very easy for anyone to publish information on the internet. Just because you can find it, doesn't mean it is true!
Internet Detective This site requires that you register (in order to keep track of your progress through the lessons).
http://sosig.ac.uk/desire/internet-detective.htmlResource Selection and Information Evaluation
http://alexia.lis.uiuc.edu/~janicke/Evaluate.htmlSelection Criteria
http://www.ala.org/parentspage/greatsites/criteria.htmlThe Good, The Bad, and The Ugly
http://lib.nmsu.edu/staff/susabeck/evalcrit.htmlEvaluating Web Sites
http://servercc.oakton.edu/~wittman/find/eval.htm