Although tiny, Poms boast having quite a thick double coat which consists of a very soft undercoat and a longer, straight outer one. As such, they do need to be regularly brushed to keep on top of things and to prevent their undercoats from matting. As with other breeds, they tend to shed more during the Spring and then again in the Autumn when more frequent brushing is necessary. It's important to teach puppies that a grooming session is something to look forward to which means the experience always has to be a good one.
It's also essential for them to get used to having their ears, feet and other places touched which makes it easier to check things on a regular basis when dogs are older which includes having to trim a Pom's nails when necessary.
Because these little dogs are so tiny, Poms don't need to be given masses of exercise, but they do enjoy and need to go out for at least 30 minutes a day. They also love to roam around a back garden as often as possible so they can be off their leads in a safe and familiar environment as long as the fencing is secure.
With this said, young Pomeranian puppies should not be given too much exercise because their joints and bones are still growing and too much pressure on them could result in causing a dog a few problems later on in their lives especially as they are so prone to breaking bones.
If you get a Pomeranian puppy from a breeder, they would give you a feeding schedule and it's important to stick to the same routine, feeding the same puppy food to avoid any tummy upsets. You can change a puppy's diet, but this needs to be done very gradually always making sure they don't develop any digestive issues and if they do, it's best to put them back on their original diet and to discuss things with the vet before attempting to change it again.