You have a choice... Become a real magician or be a wannabe. The folks here are real magicians. Steerpike, Arman, Tyler and the others. If you want to be a real magician, listen to their advice and ditch the exposure forums and delete the pirated material.
If your parents are opposed to cards and you have no money, how do you get decks for your effects? Where do you perform without them knowing? Do you hide your decks in your room? I think you are feeding us a bunch of BS with that story (especially since you first said you didn't have enough money). If I'm wrong, I apologize... But I don't think I am. If you aren't telling us some BS, then I suspect that your parents would be a little upset about you stealing the PDFs (as well as any pirated videos) - because that is what you are doing.
The book Steerpike mentioned has all sorts of magic, not just cards. Your parents may be willing to let you have something like that. If not check out Bobo's Modern Coin Magic - no cards there. Also, research Gospel Magic. Many people use magic to teach about their religion. If your parents objection is based in religion, then letting them know about how many use magic to teach about religion and faith may change their mind.
As others have said, you have many choices.