Can You Train A Golden Retriever One The First Day?

Immediately get the dog used to a collar and lead, get his on a schedule of eating and walking outside. Use his name and give a command to go out each time you take him, praise him when he goes, if you catch him in the act of going int he house, take him outside immediately. If you don’t see him do it, just clean it up he won’t understand any punishment.
Now is the best time to crate train him. Don’t force him into it, let him go in himself with a blanket or something. It provides a nice safe and secure place for him.
Of course you can start with simple commands like when he sits say sit and praise or treat.

Start asap but work on potty training feeding schedule name and sit for the first few weeks then start stay come and down after that 3 days per new command then combine

yes you start training as soon as you bring home.
potty training is good to start.

yes. it best to start trainging as soon as possible

I have a 10 year old Goldie. Once he/she is used to the surroundings the first thing should be house broken which you have to be patient for. If the puppy eats or drinks within 5 minutes pick it up to bring outside. Watch and when she starts to smell the floor bring her out. Also if the tail is up but curved under, the pup may need to go for #2. Even in the night you should wake yourself up and bring it out. In no time they get the message, don’t get lazy and let it do it in the house. As for teaching,you may think it’s that but the puppy it’s a game, playtime with you so keep tiny bits of food nearby and command the pup to sit, usually holding the treat a little higher of its nose and move your hand towards the back the pup will try to get the treat with the head up more and find itself sitting. Say sit no other words to confuse the pup. If it doesn’t sit, gently put your hand just above the hips on both sides and gently squeeze a touch as you push down saying sit. Once you do have the pup sitting give a tiny treat. You don’t have to give a big piece. Repeat it a few times then allow the pup to play so it doesn’t get bored. Only give the pup treats while you are training, not because the pup is cute.
You can teach him to come when calling his name this way too. After a week try another command the same way, then start combining both in the same training section. Once the pup understands add another command, you will be surprised how little of a treat it takes to train. Honest very tiny bits. The first lesson can be 5 minutes just to get the attention then a little longer as the pup grows. I was home all day with ours so besides entertaining myself with training it passed the time. She was about the same age as yours. She now chases her tail on command, then with a turn of the wrist she will go the other way to chase it, she comes either with a click of the fingers or calling her name. Same as sitting or laying down, once the puppy got use to the command word you can also do hand movements the same time with the word. Mine also picks up paper or grocery bags off the floor, besides giving her paw, stay etc.She also does not bark, that’s right no bark. Don’t be like other people that tells the dog no barky, right away say no in a stern voice, soon watching her and you will notice something she might growl at before barking you can say no, keep saying it while she looks at you and whatever got her attention, then when she loses interest in that then say good boy/girl and pet her or a little treat. Have fun with the puppy, by the time she is almost a year, you can have a well trained pet.