OK, so you have mastered the shared matches tool, and you can use it to find matches who might be related to each other. Let's dig just a little bit deeper into that tool to make sure you don't veer off the path and find yourself deep in a rabbit hole.
Once you are done with this video you will probably want to head over to the Family Tree DNA Explore page and watch the Matrix video, or the AncestryDNA Explore page and watch the AncestryDNA Shared Matches - Advanced video, or (coming soon!) the 23andMe Shared Matches page.
Now you are ready for the Matrix Tool.