Listen to Geo31. From what I saw and his comments, he knows what he's talking about.
I'm guessing (hoping?) that was not an instructor in the passenger seat taking the video. A good instructor would have been making quite a few comments/suggestions. If it was just a passenger and not an instructor, this was obviously not a "serious" DE type event, but probably some kind of open track day. (Serious DE events do not allow students, especially beginning students, to take a passenger. Usually, only instructors can take passengers in their car.) My suggestion would be to find a serious DE (such as run by BMWCCA) and get some good instruction. Believe me, you cannot realize how much you have to learn until you start really learning.
2004 330Ci: Sport Pkg, TiAg, gray leather, UUC Swaybars, H&R Springs, Blistein shocks, UUC SSK, Autobaun miles (Euro.delivery)