Learn how to create a flying, 3D image gallery, using any collection of images you want.

BG Renderer is a script that allows you to render your Render Queue items in the background while you can continue working in After Effects.

This tutorial explores how to set up an external text document to drive content for items like lower thirds and interstitials.
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This example expression instructs a layer to be at the same position as the next higher layer in the Timeline panel, but delayed by a specified amount of time (in this case, 0.5 seconds). You can set similar expressions for the other geometric properties.

Interactively control camera focus distance.
The camera will focus wherever your null or solid happens to sit. This expression is golden when you're doing a lot of Depth of Field work.

From Adobe's LiveDocs:
You can create an expression without using properties from other layers. For example, you can make a layer revolve in a perfect circle.