How can i teach my dog to stop biting and to behave better?

my dog is a snow fur dog i am quite young witch i don't know what name it is and he been biting a lot on me and my sister and my grandma my sis picked him up in RI and he is 7 week old i been tired in school and taking care of him he is too hyper and a biter of anything i need some advice to take good care of him and teach him to behave