Many libraries have large, subject-based Web collections that have been built to supplement the library's printed collections.
Librarians, and other information experts and subject experts evaluate every Web site that is linked
from their Web collections. This gives you the added advantage of knowing that the links
have been carefully evaluated and "quality-filtered" for content, timeliness, coverage, credibility, and other important criteria. (Section 4 of this tutorial goes into detail about evaluating the quality of Web sites.)
Use the Web collections at your local public library, regional medical library, the National Library of Medicine, or other libraries, depending upon your topic or information need.
For example, the National Library of Medicine (NLM) maintains a listing of libraries in your area that provide access to books, journals, information searches, and other services: http://nnlm.gov/members/.