Hi Kathy, Here's a how to video that may help: https://www.google.com/search?q=Repair+hole+in+wall+sheetrock&rlz=1C1CHBF_enUS781US781&oq=Repair+hole+in+wall+sheetrock&aqs=chrome..69i57j69i60&sourceid=chrome&ie=UTF-8#kpvalbx=1
My name is Linda. It depends on the size of the hole. If it's small you can just use wall putty to fill it up. Let it dry, check for shrinkage and add another layer if needed. Once everything is dry, sand the putty smooth. I like to use a damp sponge for the final feathering of the edges. Let it all dry, then prime and paint - again feathering into the rest of the wall. I also found an article with directions for a larger hole. I hope this helps you.
cut the sheetrock so it is square has good edges (a bread knife or serrated edge knife will cut it) if u don't have carpenters knife.. screw a piece of 1x3 wood at a angle across 2 corners about 1 inch in if big hole u can put a board across top and bottom of cut area half on existing sheetrock half for screwing new sheetrock to. install sheetrock screwing to board u already have screwed to cut sheetrock. then use sheetrock paper tape (half on each side of sheetrock) and joint compound to finish the repair on seam. sand and paint. walla done.