Here's the Big Picture
Animation involves three things: two keyframes and a "tween." Don't DO anything on this page of the lesson. Just look at what we are going to do by examining the image to the right.

First we will draw a circle
Piece of cake.

Second, we will insert a Keyframe on frame 15
There is always an automatic keyframe in frame one of every layer. So now we have two keyframes.

Third, we will insert a " tween"
Guess where? Yep, BETWEEN the two keyframes.

Ready?
On to page 2...