There are video's but only at the providers office used for training new technicians and its all very basic stuff. If you want to learn then your best bet is to get on with an installation outfit either a sub contractor or to go directly to a provider to work for such as dish network or directv.
Just a side note, I wouldnt trust a video to tell you how to install a satellite system as the video is shot in ideal conditions that rarely if ever exist at any installation job you go to.