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you purchsaed newly phone....Do you have experience of Android for rooting???
After you rooted you can install custom rom, remove unwanted manufature installed apps, use backup apps, use special apps that require root access, etc. This thread you mention that you just get your tab, so if you root some countires you will lost/void your warrently and you can't clam it. so its a risk.
If you are a newbie you can use "One click Root" or "Unlock Root" applicaitons. They can do it with just few clicks.
One click Root guide:- [ROOT APP] Updated: 15/10/11 - S2 Root v1.5.1 - One Click Root and UnRoot! - xda-developers
Unlock Root guide:- How To Easily One Click Root Android Phone, Tablet With Fast, Easiest, Secure.
These are the not only rooting methods, there are lot of but i think this is the easest way for it. Hope this guide useful.