There was tyranny going on down on the surface. You find a remote space that looks like you can survive there. (Read the puzzle books to find out more).

Also, beware the mix biome. it has all hostile mobs of 1.7. And instead of creepers, there are charged creepers. The best thing to do is go for the cages first. Also, you are not the only one in that remote space. Another peaceful person managed to get up there. He is very poor, and he would like it if you traded with him for items that you might appreciate.

Main objective: Destroy the Ender Dragon and the Wither, then craft a beacon and place it on the diamond mountain.

Good luck.