New layer

Command + Shift + N

Ctrl + Shift + N

Select all layers

Command + Shift + 1

Ctrl + Shift + 1

Group

Command + G

Ctrl + G

Ungroup

Command + U

Ctrl + U

Collapse

Command + E

Ctrl + E

Collapse all visible layers

Command+Shift+E

Ctrl + Shift + E

Dry digital watercolor

Command + Shift + L

Ctrl + Shift + L