Welcome from the Cali coast. Pop you rear wheels and drums off so you can have a look at the brake situation along with making sure the cables are hooked up. If all is groovy, start with an adjustment of the rears to get you situated. If its haywire, time for some parts replacement. It would be, I think, mandatory you pick up a factory service manual. Various vendors have them available in re-print. Don't waste your time with Chiltons, Haynes, Clymers or any others. Was too much missing, needed information.