I am gay.
At time, sadly, they may seem very isolating. LGBTQ in books in literature are one step in breaking that isolation, in realizing that we are merely one variable in the myriad variety that makes up being human.
Here is a list of a few novels which include LGBTQ characters and themes and for National Coming Out Day they are 50% off at Smashwords.
Although not taking part in a promotion, another author whose work you might want to visit is Josh Lanyon.
My fantasy novel Blood Duty has two secondary characters who are gay.
Another good novel with a main character who is gay and female is C. R. Daem's The Kazak Guardians.
Coming out does not make us less part of the human community, just allows us to take part in it honestly.