Files

New drawing

Save

⌘S

Menu > File > Save

Open

⌘O

Menu > File > Open

Import photo

⌘I

Menu > File > Import photo

Export as png

To export the drawing as a flattened .png

⌘E

Menu File > Export as png

Export Layers

To export the drawing as a folder of layers

Menu File > Export layers

Print

Press Cmd + P or click in the menu on File then Print

⌘P

Menu > File > Print