Question

Why do i allways see "paid memebers only"

Answer 1

in brainly there is nothing like paid member 

everything available here is free of cost for each and every user who use this

Answer 2

paid members only is If you have given money(Package of a course like computer course and etc) to that particular  website or online education or  tuition. you have become a member, you will get those things free(paid)
If you didn't give money(package*) and it says "paid members only".