Cycling Power Meter - Know your energy output for peak climbing

Importance of Using a Power Meter in Cycling Hill Climbs:
   http://www.youtube.com/watch?v=CKw-q2GLQZs

Value of Using a Power Meter:
   http://www.youtube.com/watch?v=_ChGrsJJDfQ

Using a Power Meter to Monitor Cadence and Gearing Selection:
    http://www.youtube.com/watch?v=zplQV2ZXuCQ

How to Use a Power Meter: tutorial
   http://www.youtube.com/watch?v=lYW-9dkwn4o

Variety of Power Meters:
  https://www.google.com/search?q=cycling+power+meter&espvd=210&es_sm=93&source=univ&tbm=shop&tbo=u&sa=X&ei=cIbGUpeHM8faoATXoYLABg&ved=0CK0BELMY&biw=1280&bih=708