The American Library Association (ALA) is the oldest and largest library association in the world. ALA's website provides resources for all facets of librarianship and offers guidance on professional ethics and practices.
Professional organization focused on librarians working in K-12 school environments.
This 5-minute video from Portland State University demonstrates using the C.R.A.P. test (Currency, Reliability, Authority, and Purpose/Point of view) to evaluate websites on the topic of performance enhancing drugs in sports.