GIANT NETHER PORTAL
PC version : Make tall or wide obsidian and then use flint and steel and right-click. Note : One TNT can explode one giant nether portal.
THE END
Try and make an end portal so you can go to the "The End." Note : There is one enderdragon that is the final boss and there are endermen everywhere.
SKELETON AND CREEPER
Skeleton can shoot a creeper and it will drop a music disc.
MINECRAFT COMMAND
PC version : Press the key "T" and a text box will appear at the bottom of the screen. If you press any letter, or number, you can type something in the text box. Then press "/" and you can type in something called a command ; press a letter then press the "TAB" key the number of times you want.