Red Giant TV 15: Aharon Rabinowitz shows you a technique for placing layers inside the middle of a particle system - crucial to truly integrating your CGI effects with your live action footage or motion graphics.

Add camera shake to your footage with slider controls.
Easily change speed, intensity and rotation.

Motion designer Harry Frank demonstrates how to get around the particle orientation limitation in Trapcode Particular wherein particles always face the camera.

Motion designer Harry Frank shows how to breath new life or make a retro look with standard After Effects Lens Flare by using Shape Layers and Trapcode Shine.

If you want a property to animate on 2's or 4's like they do in cel animation.

With this preset you can prevent "CC Light Rays" to cause a light spot if it's not over an opaque part of a layer.

Here is a project file that adds an anamorphic stripe and star around the standard AE lens flare.

With this preset you can cause the opacity of a layer to control the brightness of a "Lens Flare".

In this episode, Aharon shares some tips for simplifying and working with 3D compositions.

If you want an abrupt change in value, but not on every frame, you could use this expression.