Sony xperia U rooting/flashing/upgrading/ROMS

[vinaysweetheart007]

Friends yesterday i upgraded my phn wid ics with pc companinon now iam runnin on ics..
i intsalled ROOT checker application it is saying my device is not rooted..if so how to root my device..? does any risk involved in rooting..? do i void warranty..? even now im confused wid rooting and official updating..
i already have ics den y do i need to root..?
i have only a part of knowledge abt android..now my mind is running wid many confusions...
can u tell any websites that shows and explains everything abt android..?

i want learn abt android can u suggest any sites that teaches me from basics..

I will be very thankfull for replies..

 

[anon(847090)]

judging from you knowledge about rooting, u dont need root.

first learn about it Rooting - is it for me? Some Q&A | Android Central