Flying alone and wondering about stuff to do?!?

Hey. Okay so I'm flying alone from Charlotte NC to La Guardia NY. I'm really nervous because I'm terrified of planes. It's a 2 hour flight and I'm 13. How will they help me through the airport? And also, I'm spending 2 weeks with my gma and cousins. What are some things I could bring and do to keep me entertained? Thanks. Also, places to go. I'm going to Ronkonkma, Long Island, NY. Just so you know in case you can help me out on places to go