The problem with a "Building Video" is that there are so many different techniques that what you may see in the video can be totally different that the kit YOU are building.

A good example of this is to look at how a Goldberg fuselage is built compared to other Mfgr's

Or look at how some wings build the ribs into the shaped LE, while on others, the rib fronts glue to a strip of flat wood, then a balsa block is glued on and shapped by hand.