As a teen who is open about his beliefs, I can say "take it slow". You don't have to talk about your beliefs openly, this is same for both Teens and adults. I am open about it because of some personal preferneces but that doesn't mean you have to do the same.
If you want to build an altar but you can't because of your familya Abrahamic Beliefs, build an Astral Temple and create your altar there, or if you can go to the woods when you want to give traditional offerings such as honey and wine, create a little Temple there by using branches and put your offerings. Although i should say this is not a neccesity.
Before you sleep or after you woke up, read Enochian Keys. Study JoS articles as much as you can.
İf you have to go to the Church or mosque, don't be upset. Look at the bright Side, this will be an opportunity to understand why followers of Yahweh believe in this things. So you can preach better in the future.
İf some of your parents want to know what you are reading, tell them you are reading about history and politics and show them National Socialist articles. It can be Work for some while not really go well for some so think about it.
I Am proud of you, Satan is proud of you.