Caring for an animal is a big responsiblity. Chinchillas are no different. On this site you'll find the answers to many of your questions. Chinchilla care is mostly about preparation, and good care can prevent many problems.
I am not a veterinarian, and I've learned most of what I know from experience and reading. Unfortunately, that is a great deal of the knowledge base with chinchillas. They just haven't been important enough to merit a great deal of medical study.
I have found some links with chinchilla medical information, but even then it's often speculative.
Chinchillas, in fact, generally won't see a veterinarian unless there is something wrong - so not many veterinarians have experience with chinchillas. If you can find one it's something to prize!
So, on to your questions!
How do I know if my chinchilla is sick? What could he have?
What if I can't take care of my chinchilla anymore?
What are the sounds a chinchilla makes?
What woods are safe for my chinchilla?
What about pet insurance? Is it really worth for a chinchilla? Or any pet?
Should I take my chinchilla on vacation? Who will watch him while I'm away?
And of course, some chinchilla facts.