[Q] About Samsung GT S5282 with Android 4.1.2 JellyBean topic

Hi. I want to root my android 4.1.2 installed in Samsung GT-S5282. I can't use facebook as it requires more RAM & my phone have 1GB RAM & it is almost full. I can't unistall the apps that I have. So I want to root my device so that apps can be installed in my memory cards so that I can run my apps fastly! Help me..:(