My dream ? Become motion designer

Hi everyone ! I'm Antoine, I'm french and I'm 19 (so, sorry if my english isn't that good). I'm from a family of farmers but I don't want to do that, I would like to become a motion designer (create animated movies). I've already found a school and they'll accept me if I have a descent computer (3D rendering needs a powerful one) but I don't have the money at all. I would never be more thankful if you could help me. Thanks and have a great day !