Wicca is some pretty heady, heavy stuff, and at 13, you’ve got plenty of that going on already. I mean, puberty is a beeeatch! (Menopause ain’t that much fun either.) Honestly, I usually don’t take students until they’ve experienced a Saturn return (and there’s one thing you can research!)
There is plenty that you can study that will help you wrap your head around Wicca when the time is right, and if Wicca ends up not being your path, you will still have a great leg up in this world. Take a look at the list I’ve outlined here: Erisian Trubble’s Witchcraft.