Wait for the big screen that says "Animation Tutorial" to fade out, then once the "Let's Go" button fades in, click that and that'll fade out and the tutorial will fade in. Once you're there use the arrow keys to move back and forth. Good luck animating!
Thanks to the users who created all those tutorials I watched to make me the animator I am today. I'm not the best artist, but I'll bet there's tutorials for that too! If you remix please give credit.
