Often, the sit command will be one of the easiest for your dog to learn first. Next, you can train your dog to lie down. At the same time, work on teaching your dog to stay. In addition, your dog should be trained to come when called as soon as possible. This is one of the most important fundamental commands. Once your dog has mastered these dog obedience basics, you can move on to fun tricks and advanced commands.
The process is the exactly same for older dogs as it is for puppies; prevent accidents from happening by using baby gates and a crate if possible, create a predictable schedule, learn to recognize your dog’s potty signals, accompany your dog outside and immediately reward for all outdoor elimination, properly clean any accidents and supervise your dog until you’re sure that he understands the rules.