This is very easy all you have to do is link your Instagram account to Facebook then all your Facebook friends who have Instagram will follow you. Besides, you can find those people who use Instagram in your phone's contact list.You'll have to follow them and they'll in turn give you a follow back. Finally, there's this site called linkcollider. With linkcollider you get free Instagram followers and likes if you wish.All you have to do is create an account then you'll be guided on how you can collect tokens which you'll be paying the followers.