Note that rooting will void the warranty of your phone.
If you have no idea on what rooting is, here is a brief description for you:
Rooting is process which gives you super user permissions over your phone.You can uninstall/freeze manufacturer/carrier bloatware,install custom ROM’s like Cyanogenmod,MIUI etc.
TUT & Quelle : http://www.droid-guru.com/2012/04/21...easy-tutorial/