The built-in tour (C-h t) is pretty good and doesn't take too long. Learn the various built-in help features, and use them. C-h C-h describes all the various h

The built-in tour (C-h t) is pretty good and doesn't take too long. Learn the various built-in help features, and use them. C-h C-h describes all the various help features. Beyond that - force yourself to navigate via the keyboard only (no mouse, no arrow keys). You'll get more efficient and pick up shortcuts as you go.