After punching the same tree for 15 minutes, I tried to go find shelter. I punched a dog in a pack and died. Then i fell in a lava pool on the surface. After this, I tried to tame a creeper with dirt ._.
Once I got the hang of the game, i went sperlunking with wood tools. Then, i found diamonds, and tried to break it with my tools. After it broke and I didn't get anything, i threw myself into the nearest lava pool and died.
When I started in my first world I wandered maybe 50 blocks away from spawn and then built a house. Then I died somehow and respawned, never to find my house again. By using creative and minimaps, I still haven't found my house... SPOOKY