I'm thinking about possibly getting another hamster, I want information on hamsters?

I owned a hamster probably about 10 years ago, so it's been sometime, I owned rats about 5 years ago and I currently own guinea pigs and a rabbit, so as you can tell I love animals, especially little furry ones, anyways if I do end up getting a hamster probably in the next year or so (no hurry), then I just think I should brush up on my hamster knowledge, any information you have on them or tips would be great if I do get one I will be putting it in a one of those cages you can add tubes to, thanks in advance!!! (: ♥Natasha