Although a very basic guide this is a good introduction on how to care for dwarf hamsters. It offers helpful tips on care, for example the best way to catch an escapee, how to tame, dietary requirements, etc.

I do have concerns that they promoted exercise balls rather than free roaming for exercise. Also that hamsters are climbers, which isn't the case. Mice and rats are climbers. Hamsters only do this when their enclosure is too small and they are stressed.

If you're interested in keeping dwarf hamsters, this is a good starting point for your research.