No by all means please keep the questions coming. I can live vicariously through your build.
Maybe the best way to picture the construction is like this, imagine a normal stud wall with U channel on the top and bottom and the studs slotting into place vertically. Then if you were lift the whole wall and hold it horizontally above your head and fix the bottom U channel to the wall that's basically it. The studs are now running horizontally so need support from above.
One thing I did before starting was to buy one piece of U channel and a stud from Wickes (approx. £10) just to have a play around to see what works and how stuff fits together. You soon realize how strong it is.
Another tip make sure you measure twice and cut once as shaving a bit of the end of a stud is really hard as the studs can deform at the ends. You will see what I mean the first time you try to cut the end. They do bend back into shape, but just a bit of a pain.