Re: 3 day split.
Most important thing is getting in the gym and training rather than looking for a magic routine. I remember you asking this a couple of years back and the advice then is equally as valid as the advice now.
Chin ups/pull ups/pull downs
Abs end of each workout.
Most important thing is to progress on each exercise, get strong.
After you get really strong you won't need to ask anyone for advice, you'll just know where to go next with your training.
Sent from my SM-A320FL using Tapatalk