First let me apologize if I am putting this post in a wrong forum.
I just started playing guitar 3 weeks ago. I am going through beginners guide on this site. I am practicing Knocking on Heavens door. I don’t understand rhythm at all. I don’t understand how many times should I strum a chord and what pattern (up or down). I am already starting to get frustrated. Please let me know if it’s just me being dumb or it happens with everyone? How to solve this problem?