The web can provide excellent resources for your topic, but if you are only using Google and Wikipedia to find information, you may not be finding all of the information that is available on you topic. If you are being asked to use scholarly resources use the resources you can find in the SUNY Cortland Memorial Library Catalog!
The Library of the University of Berkeley website provides a guide how to "evaluate websites".
Johns Hopkins University Press Project MUSE partnered with the USHMM to launch its Encyclopedia of Camps and Ghettos, 1933-1945. This open access, searchable publication is a resource for research Nazi persecution sites.
Professional Societies and Organizations often provide valuable information on their websites: publications, news, workshops and competition announcements.