I hope you understand my reasoning.
I difficult situation, but not insurmountable. I've heard worse.
Let me start by saying there's no way you can win an argument with your parents over this. Take the indirect approach instead, but don't neglect school in the process.
You'll want to go to the library and see what they have. Anything is good at this point. Mark Wilson's I've already mentioned, but you'll also want to see if they have a copy of Modern Coin Magic. This is considered by many the ur-text of coin magic. If you can get the book long enough to learn about a half-dozen sleights, that should be more than enough to work with for months, if not years to come. The advantage here is that coins are everywhere. Billy Gibbons of ZZ Top actually said that the reason he (sometimes) uses an old 5 peso coin as a pick is because when the band were first starting out he kept losing his picks in the bars they played at, but he could always find or borrow a quarter.
While you're in school, see if there's a way to get in on any stage productions or plays, even if it's only crew. Something to get you experience and stage time or at least watching how the teachers guide the students and tell them the basics of acting and stagecraft.
I would also recommend that you start reading more books and watching more movies, especially in the realm of speculative fiction. I cannot recommend The Twilight Zone enough. The whole series is now on Netflix and you can probably find the best episodes streaming somewhere if you look for them. The writing in the show was so astute in its social commentary on the human condition that many of the episodes have been imitated or referenced to the point of cliche.
I'm also a big fan of Ray Bradbury and Neil Gaiman and recommend you look into some of their books. "Stardust" just had its 15th anniversary this year and was Neil's attempt to create a fantasy novel like those seen in the 1920's before "Lord of the Rings" was published. And of course "Something Wicked This Way Comes" is one of the greatest novels ever written. Another magician and I have recently talked about a show influenced by Avatar: the Last Airbender, which is one of the better shows of the last decade. There's more in
my blog. Haven't had much time to work on it lately, but the archives should provide good reading material.