D.N.
I would start with the fabric for curtains or pillows for the family room by visiting Calico Corners or even Jo-Ann fabrics. The accessories can then tie in with the fabric. For the MBR, you can try Bed Bath Beyond or any of those places to start with your "theme" by picking out your comforter set. If you don't know a local seamstress or know how to sew, I would try store bought pieces for the bed that you love and then decorate around that. Magazines are another great resource. The library has lots of decorating books too. Decorating is a fun hobby...I've been having a ton of fun doing my house.