Go to: options
Choose: Controls
Click on: reset next to Pick Block option.*
* If you want to change to something else click on what is currently selected then press the button you want to pick block. (Pick block only works in creative)
To be in noclip in Minecraft, you will need to turn on your fly mode, and press the button that you set it on. Except some severs have some blocking thing that can block you from using fly mode.
Get some flint and steel, then right click the block you want to set fire on. Alternatively you can just hack in fire blocks and place them.
how to waypoint is you have to download the waypoint mod and install it in minecraft. when you have the mod installed, you press the waypoint button(i forgot what button)and you press submit and you have a waypoint at where your standing
Press E or the button you set to look at your inventory, and you should be standing in a box.
hold set button then hit scan for mins. and seek for hour. then hit set
The default button is Q. If you have mods installed, the default button for dropping objects can conflict with a command pre-set in the mod. You can change the controls in the game options. Many people prefer "drop object" to be assigned to the upper arrow key.
Generaly if a wood block is not touching a flaming block or a block that can be set on fire, the chances of the wood catching on fire is very low (although still possible)
You used to be able to hit it, but now you either have to make a redstone path or set the block next to it on fire.
You have to go to minecraft.net then there will be a button that says buy now. you type in your credit card information and everything else and you'll be set but make an account first.
You can set TNT off in Minecraft Beta by clicking it, or by triggering it with redstone.
There isnt a command for health boost. If you can get a plugin to do so then set it as @p healthboost 1000 (guessing thats the command)
to change from day to night in minecraft without mods you have to wait until the sun goes down. to get from night to day you can right click a bed to sleep.