Just so you know, a puppy is never completely housetrained until they are 6 months old. For some breeds, even later. This means that though you may be making tremendous progress housetraining, there will be "mistakes". Sometimes for reasons you can't figure out! Don't fret about it. Stay focused on the progress you are making. Your confidence in the techniques you are using to house train your puppy will ensure your success.
Let your new dog gradually earn freedom throughout your home. A common error that many pet parents make is giving their new dog too much freedom too soon. This can easily lead to accidents relating to housetraining and destructive chewing. So, close off doors to unoccupied rooms and use baby gates to section off parts of the house, if necessary. One of the best ways to minimize incidents is to keep your dog tethered to you in the house and by using a crate or doggie safe area when you can’t actively supervise him.
Once he seemingly has this idea down, move the string of bells to the left or the right of your dog and see if he moves to go and hit them with his nose; if he does click and treat! Next try moving the bells above his head and then closer to the floor. If he is chasing them with his nose in an attempt to ring them, then he understands what you want!

Punishment is operationally defined as an event that lowers the probability of the behavior that it follows. It is not "punishment" in the common sense of the word,[42] and does not mean physical or psychological harm and most certainly does not mean abuse. Punishment simply involves the presentation of an undesired consequence (positive punishment) when the wrong behavior is performed, such as a snap of the leash, or the removal of a desired consequence (negative punishment) when the wrong behavior is performed, such as the trainer eating the cheese that would have been the reward.[43] A behavior that has previously been developed may cease if reinforcement stops; this is called extinction. A dog that paws its owner for attention will eventually stop if it no longer receives attention.[44]
Motivational training has its roots in captive animal training, where compulsion and corrections are both difficult and dangerous, and ignoring bad behavior is not problematic as the animal lives under controlled conditions. As a dog training strategy, purely positive training is feasible, but difficult, as it requires time and patience to control the rewards the dog receives for behavior. Some activities such as jumping up or chasing squirrels are intrinsically rewarding, the activity is its own reward, and with some activities the environment may provide reinforcement such as when the response from dog next door encourages barking.[61]
César Felipe Millán Favela (/ˈsiːzər mɪˈlɑːn/;[4] Spanish: [ˈsesaɾ miˈʝan]; born August 27, 1969) is a Mexican-American dog trainer[5] with over 25 years of canine experience. He is widely known for his Emmy-nominated television series Dog Whisperer with Cesar Millan, which was produced from 2004 to 2012 and is broadcast in more than 80 countries worldwide.[6]
It's an exciting time when you bring your new puppy home, but a new pet also comes with challenges. One of the first and biggest challenges that you may face is that of potty training. Some puppies will learn this quickly, while others will struggle with it for a while. During this training period, always remember to be patient, remain calm, and be consistent. If you stay positive and follow these guidelines, potty training can be a simple process.

On a side note, a puppy’s mother can actually do a lot of the potty training for your dog. I know of several reputable breeders who tell me that the mother dog trains their pups not to eliminate in their nests. From the moment a puppy is born its mother is teaching it that the NEST is the place where it eats & sleeps. One of the first rules Mama Dog starts to teach her pups is NO peeing or pooping in the family nest – That’s Disgusting! And she makes them follow her outside.

Operant conditioning (or instrumental conditioning) is a form of learning in which an individual's behavior is modified by its consequences. Two complementary motivations drive instrumental learning: the maximization of positive outcomes and minimization of aversive ones.[39] There are two ways in which behavior is reinforced or strengthened: positive reinforcement occurs when a behavior is strengthened by producing some desirable consequence; negative reinforcement occurs when a behavior is strengthened by avoiding some undesirable consequence. There are two ways in which behavior is decreased or weakened: negative punishment occurs when a behavior is weakened by not producing a reinforcing consequence; and positive punishment occurs when a behavior is weakened by producing a consequence that is a disincentive. In combination, these basic reinforcing and punishing contingencies provide four ways for modifying behavior.[40] Reinforcement increases the relative probability or frequency of the behavior it follows, while punishment decreases the relative probability or frequency of the behaviour it follows.

Millan's work focuses on handling a dog with what he calls "calm-assertive energy".[9] He believes that dog owners should establish their role as calm-assertive pack leaders.[18] According to Millan, dogs have three primary needs:[18] exercise, discipline and affection, in that order.[30] In other words, it is the owner's responsibility to fulfill the dog's energy level needs through challenging exercise; then to provide clearly communicated rules, boundaries and limitations; and finally, to provide affection.[31] According to Millan, a common pitfall for American dog owners is to give a great deal of affection with very little exercise and even less discipline.[31] He encourages owners to understand the effect their own attitudes, internal emotions and physical postures have on a dog's behavior, counseling owners to hold strong posture (i.e., shoulders high and chest forward) and to project energy that is calm-assertive.[16][32]

Confine your puppy to his, 'puppy-proofed' bathroom or an exercise pen and paper (or wee-wee pad) the entire floor. Put his bed, toys and food/water bowls there. At first there will be no rhyme or reason to where your pup eliminates. He will go every where and any where. He will also probably play with the papers, chew on them, and drag them around his little den. Most puppies do this and you just have to live with it. Don't get upset; just accept it as life with a young puppy. The important thing is that when you get home, clean up the mess and lay down fresh papers.
Before enrolling with a particular club contact them and ask if you can go to watch a class without your dog. This will help you decide if this is the right environment for you and your dog. Some clubs have waiting lists and you will need to book ahead, some accept people on a roll on roll off basis. Prices will vary from a joining fee and then weekly payments to a one off fee for a certain length of training.