Photoshop Actions allow you to record a series of editing steps, and then apply that same series of edits to anything else. Actions can save you a ton of time when it comes to complex processes like sharpening.
Push and pull pixels in your image with the Liquify Tool. This tool is great for reshaping or restructuring objects that seem a little off or out of place. This tool can be a Photographer’s best friend, but the key is moderation.
Understanding how foreground and background colors work in Photoshop will speed up your workflow and help you use Layer Masks more efficiently. Learn some commonly used keyboard shortcuts and how to get the most out of the Color Picker and Swatches.
The building block of creating great images and a speedy workflow, understanding Layers is key to mastering Photoshop. Learn all of the layer types, how to work non-destructively, and how to organize your projects like a pro.