Different things work for different people. But if you're living in your mother's house, you should respect her wishes in the matter, at least a bit. Also, have you ever asked her why she doesn't support it? Perhaps she has an actual reason, other than that you're a teen and she's your mom.
There are still spells and stuff you can do with things lying around your house, after all. And it takes no materials to bless something, only willpower.
My suggestion, overall, is to start small. Sometimes you can get teaching books from the library, so start there. There are also an abundance of resources on the internet. As for tools, there is almost always a substitution available. If you can't find a substitution, feel free to send me a message to ask!
You are still able to develop your abilities and create stronger connections with whatever sources you use for your magick. You don't need any tools to do that and no one is able to stop you from doing that. Your connection to the sources ultimately define how powerful your magick is and you are still able to work on strengthening your basics and control, without the use of tools. These basics are what is needed most when practicing magic and if you are weak in your basics, you'll be weak in every other aspect that stems from it. If you use this time to develop very strong basics, you magick will be very strong. You don't need to fight the current of the universe, flow with it and use it to bright about your highest possible outcome in any given situation. You are where you need to be, you are in a place that will serve you best, at any given moment, whether you are able to see or realize that or not. There is something special the point you are at has to offer you. That is why you are truly there.