I love this hidden feature in Photoshop. Next time you are retouching an image and want to rotate your canvas temporarily, hit “R” on the keyboard. To select the rotate tool hit “R” on the keyboard or select the rotate tool (it’s located under the hand tool). Place your tool cursor in the image window and click your mouse. Move the cursor clockwise (or anticlockwise) to rotate the canvas. Hit ESC to revert back to the original view.