If you want to animate all the different elements of your project:

• Animate layer properties by setting keyframes (see Setting and animating a layer property in the Timeline window) and by editing keyframes on a Value graph or a motion path (see Editing keyframes on a Value graph or a motion path).
• Animate masks (see Animating a mask), create motion paths with masks (see Creating motion paths with masks), and work with masks in text layers (see Working with masks in text layers).
• Animate effects by setting and animating effect properties (see Setting and animating effects) and by applying and controlling effects (see Applying and controlling effects).
• Animate in 3D (see Understanding 3D) and import 3D-image files (see Importing 3D-image files).
• Create and animate both cameras (see Understanding cameras) and lights (see Understanding lights) and use cameras and lights with effects (see Using cameras and lights with effects).
• Animate text (see Animating text) and animate text on a path (see Creating and animating text on a path).