The first thing to do when you arrive home is take him to his place outside to eliminate. You don’t want to overwhelm him with too many new people, places or situations at once. Confine the pup to a few areas in the house at first. You want him to explore his new surroundings (and praise him for it if he’s timid), but too much at once will be overwhelming. Sit on the floor with him as he explores, and praise him for coming to you with a quiet ‘good boy’ and a few pets.
Puppies have very short attention spans, and tire easily. Be sure to give him time to rest and nap – in your lap, in his crate, or wherever he settles. If he falls asleep in your lap, gently pick him up and put him in his crate. Put the crate in your bedroom, next to your bed, the first few nights at least. He will be reassured that someone is there. Hang your hand over the side of the bed until he falls asleep. Be prepared to tolerate having the puppy cry when he is confined. In this sense, a puppy is no different than a baby and is easily spoiled. Taking him out of his crate when he whines or cries will reinforce that whining and crying will get him what he wants.
Expect that he will do most things wrong the first few days – he has no idea what’s expected. He will chew, whine, cry, have accidents in the house, and may be timid or over excited. Remember that he is a baby. Never yell at him or hit him, but teach him with positive methods what is expected. Praise is the best training tool. Always be gentle in handling your pup. Speak to him quietly. Take the time to show your puppy what you want him to do. When he obeys, give lots of praise and affection. Talk to him, stroke him, name everything he’s doing. Say ‘crate’ when you’re putting him in his crate, ‘food time’ when you’re putting down his food, ‘water’ when he drinks water, etc.
Have fun, enjoy each other!