The key starting out is getting measured and having a proper fit on the ball. Because there will be a lot of variables with hand position, etc with just starting out, this is probably the only case where PAP and specific layouts are not as important compared to us who have been in the game for a long period of time and know what we need.
A standard pin over ring layout would typically be the safest way to go on an entry level piece. As the skill and technique develops, you'll then become more familiar with what works best for you.
Now with the fit, don't be afraid to tell your pro shop if you want more bevel, the ring finger to be more oval, or anything like that. After all, you're going to be throwing the ball and you want it to "fit like a glove." In my case, I don't have the holes beveled much, but do have the ring finger a little more oval because of problems in the past where I would tear the finger. Ever since, no issues and it fits perfectly.