Important Photoshop Features

Color Balance
Masking
Quick Selection Tool
Quick Mask Tool
Content-Aware Fill
Clone Stamp Tool
The Patch Tool
How to use Levels
The Pen Tool
Flames Filter
The Type Tool
TypeKit Fonts
Using & Working with Guides
Smart Objects
Field Blur
How to use Curves
The Eyedropper Tool
Import Color Themes with Adobe Color
BONUS: Gradient Maps
How to Create an Action
The Crop Tool
Colorize Live Shapes
Convert Objects to 3D/Working with 3D
Custom Workspaces
The Camera RAW Filter
Exporting Images and Graphics
BONUS: Changing the UI
Background Color
Color Range
Select and Mask
Liquify
The Healing Brush

The Rotate View Tool