that website may be okay but I disagree with the "cleaning the oven" tips. Do NOT line your oven with aluminum foil unless the owner's manual says it won't be a problem. AF will possibly change the cooking temp in your oven....and may cause other problems. A simple tip for cleaning a NON-self-cleaning oven is to take out the racks, put them in a 30 gal garbage bag in your bathtub, put in 1/2 cup ammonia and close with twist tie. Leave it overnight and then carefully remove them, and wash off the racks. Amazing how easily the racks come clean. For the even, line the bottom of the oven with an old wet, dishtowel. Pour 1/2 cup ammonia on the dishtowel, close the oven and leave overnight. The next morning, wipe the oven clean. If you have REALLY badly burned on food, it may take a few attempts to get it all out.