Where do you put more paper into an HP printer?

I know it probably seems like a stupid question but it's driving me crazy!Where do you put more paper into an HP printer?
i found a place where it tells you where to load the paper hope it helps best answer me if it does plz thank you.





http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00315264%26amp;lc=en%26amp;cc=us%26amp;dlc=%26amp;product=441115%26amp;rule=31323