@BobTabor: show your VS set up, por favor. Several of us cannot see the designer pane you are showing us at the 3:14 mark. Even when I toggle between F7 & Shift-F7 it is still textual code - nothing visual.
Just installed VS2015 Pro and I appear to be missing some components. My Toolbox is 100% empty. Also, when I open HelloWorld.xaml from Solution Explorer, I don't see the design canvas - I only see the XAML code. What do I need to enable?