Here’s a cool trick I recently learned.  Have you ever wanted the same document opened twice in Visual Studio?  For example, instead of jumping between two spots in the code by scrolling, you could have it opened in two tabs.

To do this, all you need to do is activate the tab in question, then click the Window, New Window menu command:

Now you have two versions of it open at the same time!

Now take your ninja tab skills a bit further and show the two of them side-by-side.  You can do this with any tabs by using what are called Tab Groups.  These can either be side-by-side (Vertical Tab Group) or one-over-another (Horizontal Tab Group).  To do this, right-click the tab that you want in the new group, then click New Vertical Tab Group:

Voila!  Now you have some tabs on the left, and some on the right.  You can drag tabs between the groups, pin, or whatever else you need.  Most importantly, now you can edit documents with maximum flexibility, even on one monitor!