TIP #1: DEMAND BARKING
Dogs that have learned that barking gets them what they want - balls thrown, doors opened, dinner, or attention are "demand" barkers. To curb demand barking, immediately stop rewarding the barking: Ignore your dog or walk away when he barks. Pick times when he is quiet, tell him “Nice quiet,” and pet or treat him. If your dog barks when you work at the computer or talk on the phone, preempt his behavior. Settle him in his crate or on his bed with a toy or stuffed Kong before you sit down to work.
TIP #2: INCLUDE TRAINING IN EVERYDAY SITUATIONS
Use everyday situations to train and continually strengthen good manners - without spending a lot of time on dedicated dog training sessions. It boils down to this: Whatever the dog wants, don't give it away for free. Don't open the door just because the dog paws at it; don't throw the ball just because he barks at you. For those and countless other privileges, ask the dog to say "please" first by doing something like sitting quietly.
The benefits of this approach are many. For one thing, good manners become part of everyday routines rather than something the dog is asked to do only in special training situations. Your dog also learns a degree of impulse control. He realizes that not immediately acting on impulse, but rather stopping to consider alternative options, can be rewarding. Training also becomes linked in the dog's mind to all his favorite activities: he will sit for having his leash put on for a walk, he will comply with a request before being invited onto the couch, he will have to look at you before getting his breakfast or a chew toy, and he will release the ball before tossing it again, and playing fetch with you. When all good things must be preceded by responding to a cue that you give, your dog quickly learns to behave politely.
The goal isn't to seek the perfect obedient response to "sit" or "stay"; it simply teaches your dog to say "please."
- excerpted from Decoding Your Dog
Jeff Dentler, CPDT-KA, IAABC-ADT, FFCP, CTDI