Series+and+Parallel+Circuits

Please Create a power point that will explain how to calculate the resistance of parallel and series circuits. I want at least two specific problems of each and a detailed explination of how to solve all four problems ( 2 series and 2 parallel). media type="custom" key="10689896"

http://www.youtube.com/watch?v=E8AZBR8Zz04

http://www.youtube.com/watch?v=ajmiqpwtJ_o&feature=related