It tends to be temporarily down now and then, but it's always being fixed after some minutes. Just take a little break and wait.
You need an a jar from alpha stages, which you can get with Minecraft Nostalgia.
No. Minecraft cannot be shut down. But if you mean if it will stop updating, that will not be any time soon
Planet Minecraft is down, Don't worry...
How to set down a object in minecraft
It is probably updating
hold w down
you dont.
You cannot hunt down Herobrine on vanilla Minecraft, since he doesn't exist. He never was in the game and he never will be.
It was temporarily shut down to protest SOPA and PIPA.
No
The sea level is 64 on Minecraft. That means from sea level, y=12 is 52 blocks down.
It means that the sever is down so you will not be able to play it.