I hope I can write this so it makes sense.  I’m trying to “expand my horizons” and learn a new hobby. The thing is, I feel like my brain isn’t letting me learn how to do it.    
First of all, I’ll watch YouTube channels about how to do this hobby, but I’ll forget 2 seconds later what I’m supposed to be doing . And it also feels like my brain is blocking me from understanding what I just watched.  Anyone understand?