What is Rooting?
Rooting is a Processing to Hacking Your Mobile.In a Simple Words You will get Full administration access to your Mobile.By Rooting Your Device you will have to many advantages and Disadvantages like by rooting you can BackUp your Mobile Whole Data and Take a ScreenCast Video of Your Android Screen,Use Your Android Device to Maximum Extent,Increases Performance.
Like Advantages They are also Disadvantages of Rooting.It can Burnout your Phone Pixels,Overclocks Your CPU.The first Disadvantage of rooting is it can Discards your Phone WARRENTY.
How to Root Your Galaxy Y
1) First Download Update.zip File for Galaxy y From HERE
2) Now Put that file in Your SD Card.
3) After that Turn OFF Your Galaxy Y.
4) Now you have go to Recovery Mode for that:
Press HOME button + Volume UP Button + By Holding POWER Button
By this you will be taken to Recovery Mode in that you can’t Touch Your android Screen But you can Operate it by using Volume UP+Down for Directions and Home Button to Select and Power Button to Go Back.
5) Now Select “Apply Updates From SD Card”
6) In that Choose Update.zip file and Select YES.
7)Then you will be taken to a Screen were just Select Option “Reboot System Now”.
That’s it Your Done Your Phone is Rooted!
Note : Its your Wish to root Your android Device or Not.But for my suggestion Only root your Device if it is Old.