1.
Ok question: When i reboot my Server next time. How should i do that?
Console and init 6 ?
That is one of several options:
reboot
shutdown -r
telinit 6
should all do the same
2.
When I want to Update the Server. Can i press: Ctrl + Alt + F2 and then init 3
and then yum update yum
If you run a graphical shell: open a terminal and sudo to root (type "su -" , type the root password)
If you want to run a different TTY: you can switch to a different TTY using Ctrl-Alt-F(1-6), log in as root. Your graphical shell usually resides in Ctrl-Alt-F7.
If you want to update remotely: from windows use PuTTY to SSH to your server, sudo to root.
To update: type yum -y update (-y implies "yes" to the question if you want to update). There is no need to switch to a different runlevel (you should be running in either runlevel 3 or 5, you can check this with the "runlevel" command). The Graphical shell is usually started in runlevel 5.
Here is a bit more info on runlevels.
Thank you very much!! You are my hero

you're welcome