Pop the hood of your car and open oil filler cap (where you place the new oil) so that the oil can flow more easily. Now consult your owner's manual for the specific location of your car's oil drain plug. It's usually towards the front of the car. Place the pan that you will use to catch the old oil, under where the oil will come out. The pan should be fairly large in case you messed up and the oil overshot. It usually comes out at an angle. One you have found the oil drain plug, use a wrench to turn it and take it off. Watch out, the oil will still be hot!