Spawn on a warm beach with turtles and a village. But what's that in the background? That's a woodland mansion! Yup, it's right there near the village.
Now, you can try breeding the cute turtles by feeding them sea grass, which grows all around the beach. Once baby turtles hatch from the eggs and start turning into adults, you can start picking up sea shells. They can be used to craft strong helmets.