"You now have your puppy, whatever puppy you chose, you are responsible for turning him/her into a safe, content dog that you can happily live with for the next 10 to 15 years.
You can start immediately with three essential lessons; to be left alone, to be clean in the house and to come to you when called.
Firstly, the puppy needs to learn to cope without its dam and littermates and to learn to sometimes be left on its own. A dog that does not cope with being alone is described as having separation anxiety and these dogs can bark and howl when left, destroy their surroundings and in the worst cases toilet in anxiety.
I don’t believe in leaving a pup alone on its first night to cry for hours, it is not necessary for it to learn the lesson immediately, although obviously taking the pup into bed with you may not be ideal. A dog cage is ideal for containing a pup as they can feel safer and are not going be able to get injured around the house or chew things that they shouldn't. Some people will sleep on a camp bed in the kitchen but it is fine to have a cage in the bedroom until they are happy. Make the cage comfortable for the puppy, give it possibly 2 types of bedding or leave half uncovered in case it is too warm, possibly a soft, safe chew toy and some little treats. A covered hot water bottle and ticking clock may resemble another pup. For the first introduction a blanket with the scent of his littermates and dam is a good idea. Leave water in the cage if possible.
A good way to get the pup to like the cage is to feed it all meals in there without shutting the door to start with. Another trick is to not let the pup sleep anywhere else, so that when they try to sleep keep waking them up until they try the cage. Once they are asleep, close the door. If the pup wakes in the night, get up immediately and let him out into the garden, a dog will learn to just ask once and then be happy that you are coming to help or they can learn to bark for 20mins to get you to come. Don’t talk or play with him, pop him back in and stay around until settled back to sleep or let him fiddle about until he tries to go to sleep. Use the cage during the day when you are around not just at night or when you go out, he needs to learn to be apart from the family and indeed other dogs in the house.