Use Photoshop Templates To Jump-Start Your Projects
In Photoshop CC 2017 you can use starter Photoshop Templates provided within the New Document dialog to jump-start your creative projects.
To access the templates go to File > New, and select a category: Photo, Print, Art & Illustration, Web, Mobile, and Film & Video.
Watch a video tutorial on how templates work here:
https://www.youtube.com/watch?v=-U3-y604e4k