Boxers are among the more energetic and intelligent breeds of dog. The love getting attention from their owners and constantly seek out attention. Like many other breeds, they are very intelligent and have a very high capacity to learn. Right along with a strong stubborn streak that shows up when they don't feel like doing anything. The earlier you start potty training your Boxer pup the better, however, you should wait until he is about 7 weeks old as he won't be able to fully understand what you are trying to teach him.
The task at hand is simple. Your job is to train your dog that going potty inside your home is not an acceptable behavior. At the same time, he must learn that the only place it is acceptable for him to go potty is outside. You should try and choose one spot of your yard that will become his place to go potty. This will help to eliminate any risk of confusion and make it easier for you to train him successfully.
There isn't much to getting started potty training your Boxer, beyond having the time and patience to keep taking him outside until he masters the art of holding himself until you take him out. You will need a few things.
Potty training any dog is more about consistency than anything else. The more on schedule you are and the more of a routine you develop, the easier it will be for your pup to figure it all out.