VisualDx has a YouTube channel with many tutorials. A few of these are embedded in this guide. There are also Video Tutorials on the 
website.
Click on the PubMed link under "Other Resources" on the left side. 
This will open PubMed to a list of articles about your search topic.
VisualDx images are integrated with UpToDate. Click on the UpToDate link under "Other Resources" on the left side.