Teachin puppys not to bite?

i just got a 10 week old gsd my 1st dog of the breed. I have a 5 yr old nephew and will have a baby in the future. does anyone know where i could get her trained at in centrel indiana? would it also teach her not to bite to put a muzzle on her when hes around? any advice ? any good websites with good info? any info would be great thanks