What things should i talk about when im talking to a girl? What topics of conversation should i talk about?

What things should i talk about when im talking to a girl? What topics of conversation should i talk about? Im looking for a girl. Its this one girl at my school that i have a crush on. What should i talk about whn im talking to her. What can i talk about when im talking to a girl. How can i be confident around women? How can i boost my self-esteem when it comes to girls? Im always thinking about my appearence. Im not skinny and im not obeast. Im a chubby kid. Can someone help me?