Ctrl + N – New Document Dialogue Box
Ctrl + M – Curves Dialogue Box
Ctrl + A – Selects all in the currently foreground document or currently selected layer
Ctrl + D – Deselects all in the currently foreground document or currently selected layer
Ctrl + J – Automatically creates a duplicate of the currently selected layer
Ctrl + K – Preferences Dialogue Box
Ctrl + L – Levels Dialogue Box
Ctrl + F4 – Closes current document
Ctrl + ‘ (Single Quote Key) – Toggles Grid Lines
Ctrl + Q – Quits Photoshop altogether
Ctrl + R – Toggles Rulers
Ctrl + U – Hue/Saturation Dialogue Box
Ctrl + O – Opens New File
Ctrl + P – Print Dialogue Box
Ctrl + Z – Undo last Action
Ctrl + Tab – Toggle between open documents
Ctrl + Shift + C – Copy Merged
Ctrl + C – Copy
Ctrl + H – Toggle Extras
Ctrl + X – Cut
Ctrl + Alt + Shift + X – Pattern Maker
Ctrl + V – Paste
Ctrl + Shift + V – Paste into selection
Ctrl + Alt + Shift + V – Paste Outside
Ctrl + T – Transform Tool