Get basic information of instagram page

I have number of instagram pages/urls of different users like http://ift.tt/1HtGUL2 etc etc etc. I want to get following information of that page

name, number of followers, description, bio,

I have searched and all showing using access token. But I am confused if I will take access token from my account, how can I get information of other pages?

Please guide me how can I do that?