The Art of Raising a Puppy and How to Be Your Dog's Best friend by The Monks of New Skete are my favorite books. I used them to train my German Shepherds and they were amazing. I use the same principals with Lucy although I can't help but truly spoiling her rotten and so far, so good.
I'm sure others will have great suggestions also!
__________________ Kathy and Lil' Lucy and Jammies 
Rest in Peace my Sweet Buster  |