Another essential part of the brush tool is the active color. In digital painting you generally don’t have to worry about mixing colors on a palette, reloading paint, or cleaning your brush. In Photoshop you just need to learn a few helpful keyboard shortcuts, and then you’re on your way! One bit of advice: make a custom keyboard shortcut for “foreground color picker”. You’ll use it constantly, so pick some key that’s nearby your left finger tips.
Tools in this video
Matching / Sampling Colors: Alt with Brush tool active (option on mac)
Color Picker Window: No default, make your own! (it’s called the ‘foreground color picker)
Toggle Foreground and Background color: X