The grammar here needs a lot of work:
It is not difficult living in Boston and not hears about Boston University
This sentence uses a double negative which, ironically, negates your actual meaning. Revise.
I was being there so many time middle schools thru high school.
You need to revise your tenses here.
Where I had the great opportunity to asked question about the experience of admission and learn more about Boston University, through my tutors who are current students of the University.
Another of the way I used to know more about Boston University has been in my AVID class and through conversations between my friends and me.
Try this instead: "Another way I learned more about Boston University was through my AVID class and through conversations between my friends and me."
This is a sentence fragment.
And of course the internet and through different website that offer diverse information.
Also a sentence fragment.