Here are a couple more short videos showing some different things you can do in the key of G on the acoustic guitar.
Part 3: Provide rhythm and some melodic lines at the same time. It’s like you’re playing two instruments at the same time! (Sort of.)
Part 4: Use a capo to play in other keys, but keeping the shapes from the key of G.
I hope these have been helpful. If you have other tips to share, please do!