When and how, do I tell him...?

This weekend I'm going camping with a couple of friends and their families. Two guys in particular i like very much, one more than the other. I really want to tell the one I really like, that I like him. My friends have told that he, and they, think that I like him. I think he likes me because one of my other friends told me that he would ask me out if he knew i liked him! I want to tell him this weekend, but I don't know how to tell him. There are going to be TONS of other parents and kids running around so i need to be crafty... I also have one other thing.... I want my first boyfriend, to also be my first kiss. But i dont know if he's ever kissed a girl before! Grrr! Please help me out and give me advice on what you would do if you were in my situation.