Being able to precisely and accurately select and mask things in Photoshop is one of the most fundamental and essential skills any photographer or retoucher can possess. This helpful video will show you how to cut out just about anything you'd ever want to using Photoshop.
Coming to you from Jesus Ramirez of the Photoshop Training Channel, this great tutorial will show a masking workflow by making use of the Select and Mask workspace in Photoshop. The Select and Mask workspace is where you'll often cut out objects or people in the program, whether that be for composite work or some other purpose. If you're new to this technique, one of the first things to note is that this sort of work is rarely done in one step. The process has a lot of steps of refinement, so be prepared to be patient and to really work the selection to a state of perfection. I recommend paying particular attention to and practicing the section on removing fringing, as fringes can be a bit of a nagging leftover from a selection that can undermine your ability to create a realistic composite. Check out the video above for the full rundown.