Q: were do i look for stuff? anything that can help i need a lot of help and can i do it at the age of 11?
A: Are you even Jewish? Do you go to a synagogue? If you're Jewish, you will become a bat mitzvah at the age of 12-13 (different communities have different standards for girls), whether you have a ceremony or not. If you're not Jewish, you're not obligated to observe the mitzvot, so having one would be meaningless. I suggest you get in touch with your local rabbi - they will help you with everything you need to know and do to have a bat mitzvah service at their synagogue. It's possible your family may need to become members of the synagogue to host the ceremony there. I would send you to a website, but with the amount of knowledge it looks like you're lacking on the subject, I think you would be far better off getting help in person at the very beginning. A rabbi will be able to teach you what you need to know, answer your questions, and be there to support you far better than any book or link. Many synagogues even have classes, so you can learn along with other kids your age. If you need help finding a synagogue, post where you live (not too much info, just the town you live in - or the state if you'd rather stay more private) and I can try to look one up for you.