instagram authority accounts

Hello BHW members, I've been reading some e-books from here lately and they always mention 'Instagram authority' in them. But I have not found a good explanation or a guide on what I need to do to gain 'Authority'. Can anyone explain this to me? Thank you :)

Hey Blackhatters. Quick introduction as this is my first thread. I've been into IM since 2010 and Facebook has always been my playground. I've made tons of money using Facebook. The golden period was 2010-2012. So much so that I did my MBA using my earnings from IM and graduated debt free. (MBA...