You don't wish to learn it all and the entire Yachtmaster Ocean Course seems a bit daunting? You just want to get going using your sextant with no fuss, but still want to understand what you are doing and why?
This video explains Noon Site and Sight Reduction in order to determine your position by using "Sun-Run-Sun". Great as a back-up for electronic navigation and getting an insight behind the scenes of a true ocean master.