Bisexuality Support Group
Bisexuality is a sexual orientation which refers to the aesthetic, romantic, and/or sexual attraction of individuals to other individuals of both their own and the opposite gender or sex. Most bisexuals are not equally attracted to men and women, and may even shift between states of finding either sex exclusively attractive over the course of time.

You might have an easier transition into the gay world if you watch TV and movies about gay and bisexual men. Or read books about them. Gay people write so many good books.
I understand the desire to learn more about bisexual life and culture and I commend you. Porn is not the easiest, best or most accessible way to do this, but you have other tools in your arsenal. Netflix, TV, and books will help with this journey of educating yourself.