chinsnhedgies.com, conveniently for both chinchillas and hedgehogs. I used to have a chinchilla and used that forum a lot. I'm not sure how active it is anymore, since it has been years since I used it. I tried to use it for info about hedgehogs at first, but it wasn't very active on the hedgehog side. I think the chinchilla side was always a bit more active, though. Anyway, regardless of if the forum is active, they still have a ton of great info if you browse through the posts. Otherwise feel free to message me with any questions you have and I will either know the answer or can help you find it. And I have a little chinchilla care sheet I made that I can forward to you, if you'd like.
They're really sweet! I miss my little girl a lot. I had her for about 6 years, but when I went to college my mom wasn't taking as good of care of her as she deserved, so we had to sell her. ):
Some random information: They need a cage that is tall, and ledges to jump on. The Ferret Nation cage is a favorite. Anti-pill or blizzard fleece. Mine loved the hammock I made for her. They are nocturnal rodents, so they will chew. 98% will not cuddle with you, but if you sit on the floor as they run around, they'll jump on you. Mine loved to type on my computer by walking across it, haha. A lot of the pet store foods/items are not safe. I ordered my food from someone online and it cost about $30 every 6 months or so.
Anyway, feel free to message me with any questions you have. Good luck in your research! Aren't forums great for learning about pets? I wish every pet owner used one to research care before buying the animal.