Slip collars (commonly called choke chain or check chains) are made of metal links or rolled material such as nylon or leather. A metal ring is at each end. Historically, slip collars have been used as a matter of course, mostly in North America and the UK. In the last few decades use of these collars has declined. Correctly used, the collar should make a quick clicking not zipping sound when quickly snapped and released to startle or get the attention of the dog and indicate to the handler that the technique was a swift jerk not a choke. The idea is not to strangle the dog, though this can happen if the collar is improperly used.
Unless you plan to keep your dog outdoors--and few of us do because it's not recommended--you'll need to teach your dog where to eliminate. Therefore, house training (also called housebreaking or potty training) is one of the first things you need to work on with your dog. Crate training can be a very helpful part of the training process. This includes house training as well as many other areas of training: