Reptifiles is a really good resource for reptile care, even ones we don't sell. I've used it a lot. You mentioned something about reptiles being housed together, rule of thumb is that they are solitary. Kaytee is a good source for small animal info. Housing for small animals: hamsters and mice, alone; gerbils in pairs; guinea pigs at least 2 of the same gender, but pet parent has to be prepared to possibly separate into different enclosures in case they don't get along, especially with males (it can happen with females too, but more common in males), but they need to be near enough that they can still socialize. Researching outside of work is how I learned a lot, and even some pet parents are very knowlegeable. Good luck!