What should I do when my puppy does something bad?

Yes, don't worry, you are doing pretty much everything right! You are right too in that yelling and.hitting is not a good route to go. You are doing great with the potty training too. You don't need to bring him outside right after he goes in the house though. Puppies don't think logically like that and he has no idea why he is being brought outside. The trick is to get them to go outside and when they do, reward them. So they'll associate pottying outside with treats and.praise.

You are correct with when he chews on something you don't want him to chew on, move him away and distract him with his toys ans things that he is allowed to chew.

Again puppies don't think logically and he has no idea that these things he wants to chew have meaning ro you and are things you don't want destroyed. Yelling and hitting just makes him scared of you. It doesn't teach him anything.

You are training him much better than most people do. A suggestion, if you live in a house, instead of an apartment an idea would be to get a dog door and train him to go through it when he needs to do his business. If he chews on things, he is probably at that point in his life where he is still teething and getting used to his teeth. You are doing well by calling him away from chewing and instead playing with you.

When you catch him about ready to chew on some furniture or other item, I would just calmly say NO. That will get him use to the word so that you can use it in the future. It sounds like you are doing everything right. Especially since he is responding to your training. I have never yelled at my dog either. Just keep up what you are doing. It sounds like you have everything under control.

Buy a dog book. Your dog will not be neurologically ready to control his bladder and bowels until he is around 4 months of age. Until then you confine him in a small area so you can avoid stepping in pee or poop. He can only get out for a short time, say 15 minutes at a time. Same applies when he is learning about housebreaking.

Sometimes just glaring at a dog is good enough. But if that doesn't work try spraying him with a squirt bottle it startles then and they stop. That's how I trained my dog to stop barking at the mail man and stop jumping on the table. You can also tap them on the nose. It just confuses them while you take away the object or the puppy from the situation.