What Should I Serve At My Party What Food Should I Serve At My Party?

What food should i serve at my party? - what should i serve at my party

I have a pool party with thirteen friends to my house and I have absolutely no idea what I need because I have never thrown a party before ... and 16 years is pathetic, I know. I thought I had a pizza and roasting hot dogs or something, but I'm not sure, other ideas? I also have individual one-liter bottles of soft? should be some towels if people are not calling the right place?

Music? What type is good for a pool party? Is there something I need?