I am not necessarily remembering everything from bucky’s videos. Is that normal?
Yes, learning to program is like learning a new way of thinking and a new language at the same time
It is quite normal, which is why you’ve got to play around with the code. Don’t rush through all the videos, but go slowly. Use what you just learned from each video to make something new and see if it works. Experiment 
Try and Error. That’s my best way to learn something. It takes much time but hey, internet there to help you 