Teaching your dog not to jump on people is an important part of their training as it helps them to become well-behaved and polite. It is a behavior that can be easily corrected with consistent training, patience, and positive reinforcement.

Here are some tips on how to teach your dog not to jump on people for free:

1. Be consistent: Consistency is key when it comes to dog training. You need to be consistent in your commands and actions every time your dog jumps on someone. Dogs respond well to routine and will learn faster when they know what is expected of them.
2. Use positive reinforcement: Positive reinforcement is one of the most effective ways to train your dog. Whenever your dog shows good behavior, such as not jumping on people, reward them with treats, praise, or affection. This will help to reinforce the behavior and encourage them to continue.
3. Ignore bad behavior: If your dog jumps on people, do not give them attention or react negatively. Instead, turn away from them and wait for them to calm down before giving them attention or affection. This will help them to understand that jumping on people is not an acceptable behavior.
4. Teach an alternative behavior: Dogs jump on people to greet them and get attention. You can teach them an alternative behavior, such as sitting, to greet people. Whenever someone approaches, ask your dog to sit and reward them for good behavior. This will help to redirect their energy and teach them a more appropriate way to greet people.
5. Use a leash: When you are out with your dog, use a leash to control their behavior. If they try to jump on someone, hold them back and give them a command to sit. Reward them for good behavior and continue walking.
6. Socialize your dog: Socializing your dog is important for their development and helps them to learn appropriate behavior around people and other animals. Take your dog to public places, such as parks, and allow them to interact with people and other dogs in a controlled environment.

In conclusion, teaching your dog not to jump on people requires consistency, patience, and positive reinforcement. By using these tips and techniques, you can train your dog to be well-behaved and polite, making them a joy to be around.