There are a lot of things to worry about when you're starting out so let's make sure your training split isn't one of them. There will be an in-depth course coming out soon going over the principles of how to structure a split for yourself, but we'll go over the key points here.
- Hit every muscle at least once a week (6-8 quality sets per muscle)
- Don't put two large muscles together, if you lift hard you will be too tired to have productive sets in the second muscle group. (Legs and chest is a no-no)
- Use your current physique as your guide. If you already have really big legs and your upper body is lagging behind, don't be afraid to hit upper body again if it's fully recovered. Example: I hit biceps as soon as they are recovered because they aren't up to par with the rest of my physique.
- Test different splits out and see what you like! There isn't a one size fits all for training splits, so experiment with different styles.
There are so many right answers for this as long as you have consistency. It really depends on your recovery and where your physique is at.