Where to start?
You're almost certainly coming to Koh Chang for a beach holiday. So, here's a brief run down of the island's main beaches. These are all on the west coast, with White Sand beach in the north and Lonely beach in the south. In between, you have Klong Prao - the longest beach on the island and Kai Bae.
The are other beach areas and you'll find more about them in the Island Guide which I mentioned above.