Find Exact Center
Create intersecting guides at the exact middle point of your document.
Zoom All Windows
This option tells Photoshop to keep the same Zoom level through multiple images.
Layer Palette Trick
Here’s a quick keyboard shortcut for creating a new layer below your current one.
Moving Side to Side
Here are some more keyboard shortcuts for navigating your document when you are zoomed in on it.
Set Background Color Chip
With this keyboard shortcut to use with the eyedropper tool, you can quickly sample a color for your background chip.
Filling Used Pixels
This shortcut is helpful for filling an isolated object that’s on a layer with blank pixels.