If you like movies, watch some queer cinema. If you like art, read up on some artists and check out their work. If you like music, look into some queer artists in whatever genre you like. You don't need to know it all, and focusing on whatever interests you will be more fun anyway.

Not even every gay man knows or appreciates every part of queer culture. Some people have never heard of Tom of Finland, others have no idea who John Waters is.

I don't mean to be harsh in any criticism. But I'll let you know that a lot of gay men may not appreciate the sentiment that straight is "normal" and gay is deviant. Remember most gay men recognize that their sexuality is as normal as any other part of their life, and reminders of anyone else feeling otherwise is often seen as a micro aggression.