PubMed is the National Library of Medicine's online service for searching the MEDLINE database and additional biomedical and life sciences literature. It is one of the most up to date, comprehensive and powerful ways for finding scholarly literature in biomedicine.
To start, try doing a simple search of PubMed as shown below:
Use Filters in PubMed to narrow a search by particular attribute like article type or publication year. Watch the following video to learn more (note that the video is 2 minutes in length and will automatically jump into another video after it finishes).
For more advanced searching, using Medical Subject Headings, or MeSH terms, can help you run a very targeted search. Watch this tutorial to learn more.
Using the advanced search builder, you can further refine your search, combining MeSH terms and keywords in various ways.