This tutorial goes through the basics of how to add an expression in After Effects. It focuses on setting up a simple counter expression using the slider control effect. Whether you're new to Adobe's popular motion graphics and compositing software or a seasoned video professional just looking to better acquaint yourself with the program and its various features and filters, you're sure to be well served by this video tutorial. For more information, including detailed, step-by-step instructions, watch this free video guide.