Everyone knows what a sky island is, hopefully. Instead of your starting resources starting in a chess you'll have to collect them. There's a tree in the middle of the island surrounded by a pond, next to it you have some wheat and sugar cane growing. underneath the surface there's a cave where you can collect some lava and gather coal and iron. once your supply has ran out there's a stall with some villagers attending it not to far from the island. You can bridge over to them to trade for ore and spawn eggs. Note: for the villagers to restock their items you'll have to craft a work station associated with the villager and place it next to them.