I have been involved in LGBTQIA community for a while, as well as had close friends and family, who have given me an opportunity to learn more than I would have ever learned from books or workshops. Certainly, it increased my expertise in LGBTQIA issues and I became relatively well-versed, especially compared to those who are not actively involved in the community or do not belong to it as lesbian, gay, bisexual, transgender, transsexual, queer, questioning, intersex, invisible minority, or asexual individuals. The many ordeals of LGBTQIA people that were once not entirely understood are now no longer confusing. Someone in this position may eventually conclude that there is not much to learn anymore; however, this is and will never be true.
So the truth here is this: No matter how long you study, how long you're involved in a community, how much you read and listen, how often you're surrounded by the representatives of the community, or how much you live your life with them - there will always be something that you don't know or understand. As an Ally, I will never truly understand what it is like to go through life as an LGBTQIA individual. But I can always ask questions (sometimes apologize in advance if the question turns to be unintentionally insensitive) and never assume that I know enough.