When you double click on the gray neutral area, it opens up the OPEN window
you can control click the image to select the layer, rather than using the layers palette
Holding the Space key will make any tool into Hand tool until you release the Space key.
clicking on the paint bucket, will activate the paint bucket
Moving the mouse with your meat paw will move the cursor.
Do not click save, or else you will make irreversable changes.
If you’d like to ‘end it all’, go to File>Exit.
pressing control+shift+u will change a photo to greyscale while keeping the mode in RGB or CMYK.
otherwise known as desaturate.