As long as you know the functions you can just look through scripts and it will click, you will be like "Ohhh i think i know what that is doing, so if i edit that with this it will do this" etc.
I'm personally a visual learner, so videos are perfect for me. I'm also lazy, so when I can't be bothered I just copy out code. With video tutorials, it's not as easy as to just use the code, as you have to write it, thus learning it.