The Book icon in your inventory opens the quest and guide book.
Falling into the Void will not kill you.
No mobs will spawn in the remnants of the Overworld.
Chiseled Obsidian can be used when building a Nether Portal.
Chiseled Glowstone can be used when building an Aether Portal.
Placing a slab above your head when jumping on the crushing tub lets you jump faster.
The longer a tree grows, the more wood it will produce!
Using Bonemeal on a Wildberry bush that already has berries will cause a new bush to grow.
Early on, you can craft a bed using Thatch instead of Wool to set your spawnpoint and pass the night.
If you get stuck, you can use the "/island home" command to be teleported back to your island.