According to the author, making yourself invisible in Photoshop is a simple process that anyone can do. The key is to take the right pictures to make the job easy in Photoshop. In this tutorial, Aaron Nace from Phlearn will guide you through the process of taking multiple photos and provide tips and tricks to make the job easy and fun.
The basic idea behind making a person invisible has to do with taking a "base image" of anyone and then taking supplemental photos to composite over top the base image. By following this approach, you can create the illusion of invisibility using Photoshop. The author emphasizes that the most important part of the process is capturing the right images to make the composite work seamlessly.