Also, you can look at the service manual to find out where screws/clips are located
http://www.camrystuff.com
Also, in regards to the rear bumper removal, the link provided looks easy but there is something that is missing. The taillights have a clip at the bottom that is under the bumper. You can either do it the hard way or easy way. Hard way is breaking the clip in order for you to remove the taillights. Easy way is to take out a screw on each side under the wheel well (similar to the front bumper). Only difference is that you dont have to take the entire rear bumper off completely. Once screw is removed, just pull out the sides so that it unclips. Just enough so that you can lift the taillights out and over the bumper.