Interactive tutorial on how to find articles on a topic in PubMed (1min)
Interactive tutorial on How a PubMed Subject Search works (4 min)
Go to the PubMed Online Training page for many other short turotials
PubMed - Resources for Advanced Searching is a comprehensive guide produced by Cheryl Hamill from the SMHS/EMHS library. The guide collates information from a variety of sources and includes some additional tips from Cheryl who is an expert searcher.
The PubMed User Guide also has more information on how to use the Advanced Search options. Select the Advanced Search from the menu on the right.