HI all

I am planning to take a MSc in computer science ,but I have some problems if you can help .

1- I don't know what field I should choose ?
2- What college should I choose ?
3- Where to study ? US /UK / Canada/ Australlia / Germany / Japan ?

I want to study nice interactive topics .Something that is useful in my life . I would like to study in a nice place with no fear of terrorist .

I am really confused