Library "Ask-a-librarian" tool for help using the library. You can text, chat, or contact a librarian for research help.
SEP is a professionally edited and maintained online encyclopedia on a broad range of topics related to philosophy. Experts on the subject write all articles. As such, it is vastly superior to Wikipedia and is a reasonable starting point for any philosophical research project.
PhilPapers is an online database of philosophical source material endorsed by the American Philosophical Association. Taking time to register and set up your proxy account can allow you to access full-text articles (to which CUNY libraries provide access) directly from PhilPapers.