(Don''t cry without rooting and installing Busybox)
If you don''t know what can you do after rooting?
Then use this app.
You can optimize your phone via editing build.prop, get apps about rooting or delete system apps, etc through this app.
Also if you install AfterRootingPro, you can get more optimizing items, edit build.prop directly and easily, get more apps about rooting and delete system apps clearly :)