I asked a friend about the quran and he didn't seem to know what it was.
What quran is he talking about?
I told him about my new podcast and he asked me to explain him what a quran is and I got mad about it.
It is not nice to get mad at someone for simply asking a question.  People have knowledge about different things.
I don't feel like you understand. I was just curious about it and I didn't expect him to know about it. I'll find another place to promote my podcast.
I get that he didn't understand, but I'm trying to tell you that that's no reason to be upset with him. Being so critical about certain things will make people view you negatively.