C208
With an FAA licence, you do not need a type rating to fly November registered caravans, because they weigh less than 12500 pounds. Flight Safety run a good caravan school though and it is worth doing the course because many operators will insist on it for insurance purposes.
Other countries will issue a type rating for a caravan - i.e. you have to attend a ground school, log some hours and be checked out by an instructor.
I have flown vans in the USA (no type rating required), but did hold a type rating in South Africa when I flew them there.