How to Search the Ovid Medline Database
This 2016 video walks through an Ovid Medline search. It shows how to find and select MeSH terms, how to search in the title/abstract/keyword fields, how to refine a search, how to save a search and then edit the saved search, and how to set up an auto alert.
I'll put up a frame-by-frame tutorial if you let me know that the video is not explaining things well.