Adobe Photoshop: Learning the Basics
Adobe Photoshop is the most feature-rich tool for post-production editing of digital image files. It allows unparalleled control of images to give the photographer creative tools unavailable in a conventional darkroom. Learn the basics of digital post-processing, understand how to best capture images with a digital camera for eventual Photoshop processing, and edit your personal images to achieve your desired results.
Book optional: Adobe Photoshop CC Classroom in a Book (2018 release)