I've been using weights at home and following YouTube videos. I'm loving feeling stronger. I have no idea what I'm doing really, so I just choose different videos to watch, usually 20 to 30 min full body workouts.
My question is should I be doing a workout for arms one day, another day for legs, another day core etc? Or are short random full body exercises good enough for me, who isn't ever going to be trying to get big muscles.