Draw a stick man using only lines (no fills) and make sure everything is snapped together, as in Figure 7.1.

Figure 7.1. A stick man drawn with lines. Lines are used for these exercises because they are easier to modify.

Single-click just to the right of the keyframe dot in Layer 1—that is, click in the second cell of Layer 1.

Select Insert, Insert Keyframe (or press F6), which inserts a keyframe in frame 2 with a copy of the stick man graphic.

To make a slight change to the stick man in frame 2, first make sure that you are editing frame 2. You should see the red current frame marker in frame 2. If it's not there, click in frame 2 of the Timeline.

Now, make a slight change—namely, bend one leg slightly and change the endpoint of the arm so it looks like it's swinging (as in Figure 7.2).

Figure 7.2. In the second keyframe, bend the stick man's leg in preparation for taking a step.

If you want to preview what you have so far, use the scrub technique. Grab the red current frame marker and drag it back and forth. Okay, there's not much yet, but you can see stick man beginning to take a step.

We're ready to create the third frame, so click in Layer 1 right after frame 2 and select Insert, Insert Keyframe, which copies the contents of frame 2 into the new keyframe in frame 3.

Make a slight change to the stick man (bend the leg more and swing the arm more).

Continue to insert keyframes one at a time. Make an edit to each new frame to keep the arms and legs moving, and then select Insert Keyframe again.