Write an article based on this "Get hamsters that are the same sex. Choose hamsters younger than 2 months old from the same litter or cage. Let the hamsters get used to each other's scent before introducing them."
Having a same-sex pair of hamsters will help to ensure that you do not end up with baby hamsters to care for, and it will also increase the chances that the two hamsters will get along. A reputable breeder or a pet shop employee should be able to sex the hamsters for you. Younger hamsters will be more likely to get along, so buy 2 young hamsters together if possible. This will help to ensure that they are not strangers and will increase the chances that they will get along. Do not try to put a young hamster in with an older hamster. The older hamster will be protective of its territory and the hamsters will likely fight. Exchange a bit of bedding between the hamsters' cages. Then, give both hamsters a couple of days to investigate the other hamster's scent before you put them in the same cage. Also, keep in mind that if you hold one hamster and then introduce it to a cage with a hamster you have not yet held, then the other hamster may reject that hamster based on the unfamiliar scent. Hold both hamsters before you introduce them to each other so that your scent will be on both of them.