Showing and Selecting Layers
Show or Hide a Layer
Mouse: Click in Eye icon area
Show Just This Layer/Show All Layers
Mac: Option + click in Eye icon area
Win: Alt + click in Eye icon area
View and Select One Layer at a Time
Mac: Option + click layer name
Win: Alt + click layer name
This tip works when only one layer is currently visible. In other words, hide all other layers except one. Then you can use this tip to simultaneously show the next layer you select and hide the previously shown layer.
Note: There is a subtle difference here when clicking the layer name versus clicking the eyeball area. If you click the eyeball area instead, the previous layer stays selected as the active layer, not the layer you just clicked the eyeball for.
Show/Hide Multiple Layers
Mouse: Drag through Eye icon area
If only one layer is visible when you use this shortcut, then the next layer activates and becomes visible, and the previous layer gets hidden. This is a quick way to isolate and cycle through your layer stack by viewing one layer at a time by using this shortcut repeatedly.
Select a Layer by Name
Mac: Ctrl + click the canvas
Win: Right + click the canvas
This shortcut works only when the Move tool is active. If you currently have a different tool selected, you can add (Cmd) [Ctrl] to the shortcut to temporarily switch to the Move tool. This shortcut displays a pop-up menu that lists all the available layers directly under the cursor, as long as a layer actually has some pixels under the cursor. Simply choose the layer you want from the list. This shortcut illustrates the need for you to always name your layers something relevant rather than using the default names of Layer 1, Layer 2, and so on.
Select the Topmost Visible Layer
Mac: Cmd + Ctrl + Option + click
Win: Ctrl + Alt + Right + click
This shortcut selects the topmost layer directly under the cursor.