Always put puppy in a crate or small confined area when you can't be watching. This protects the puppy as well as your belongings. Puppies can get into trouble when unsupervised. Dogs are den animals and you will find your puppy going to his crate(den) when he is tired.
Remember make the crate a "happy place" Toys, blankets and treats work wonders. Place your puppy and his crate in the same room with you if possible. The first night, especially, will be more peaceful for all of you. It is even helpful to place a kitchen chair next to your bed with the crate on the seat of the chair right next to your bed. Then the puppy can see, smell and if necessary feel you. These first nights can be quite scary for the new puppy.
Take puppy out every 45 minutes during the day for the first day and then about every two hours after that for potty breaks - and ALWAYS after eating, sleeping and excited play.
Use a special word or phrase such as "go potty", "hurry up" or "time to tinkle" and give lots of praise for toileting on cue and in the right place. You will be amazed when you puppy will potty on command.
House training is greatly enhanced if you have your puppy on a feeding schedule. Do not allow your dog to free feed(don't have food down all the time) until house training is well established. Avoid foods and snacks that can be upsetting to his digestive tract.
Time your meals around your schedule - do not feed or water right before you are leaving the pup alone for an extended period and don't have food or water available while you are gone. Puppies do not need water at night or when you are away.
If your puppy has an accident in the house it is your fault. If you are watching your puppy when he is out of the crate, taking him out frequently and feeding on a schedule, you can be accident free.
Puppy proof your house - keep tempting and dangerous items out of reach to protect you puppy and your belongings..
Correct bad behavour at the moment it's happening and praise puppy as soon as he stops.
You can begin with teaching your puppy to sit. Hold a treat above his head and watch as his little bottom hits the ground. Repeat just a few times. End every training session on a positive note - make it lots of FUN!
Puppies need lots of sleep. When puppy is sleeping give him his space. Be watchful and be ready to take him outside as soon as he wakes up.
When playing with your puppy do so quietly and gently. Refrain from a lot of rough housing at this stage. Puppies automatically try out their new puppy teeth and you don't want to encourage him to nibble on you.
Enjoy your new friend!