I think there is no right or wrong. Generally Spline curves are much smoother, as less points are used, but you cant use them always (when you have "sharp" corners or have to change direction very often). But it's just with experience you see which curve might be better in the particular case. If you are a beginner start with control point curve and understand it first, before using spline curve. (My experience)
I appreciate what you are doing but it's a little hard to follow because you are winging it live and don't have a script so it gets a little bit messy sometimes. Furthermore it appears that you are shouting at me the whole time because you raise the tone of your voice. Maybe it's just me, idk. But those things are all easily fixable and you got the basics right: the skills! On that note: Have a nice day!