How to track and zoom in AE I want to learn how to make the effect that is presented in the video from 0:29 to 0:31, that is, cursor tracking and zoom.
Here is how I would do it:

Track the cursor in After-Effects (using the tracking-panel)
Apply the movement to a Null-Object
Create a camera
Parent the camera to the Null
Change the focal length in the camera to achieve the zoom

Now your camera should follow the cursor.