Keyboard shortcut to quick focus on the left sidebar <div>

So, I loathe switching from keyboard to mouse over and over. Is there any way to do this on the instructions sidebar without using visual studio and alt+tabbing, or tabbing through the elements (19 times) until I finally hit the right <div>?

There seems to be a ton of keyboard shortcuts, I’m just surprised there isn’t one to allow easy scrolling through the lessons.