Tips on talking to guys in summer holidays. :D?

Just wondering, since it's summer holidays meeting guys is harder of course. I really want to but I was wondering if I'm at the pool or say the movie store and I see a goodlooking guy what should i do? just walk past and say hi or what? I don't want to seem weird or desperate which I'm neither I just yah am not sure what to do. Advice? And is the pool a good place to meet guys? I like school, in class better cause then you know the guy is your age but how do I figure that out in the summer? Just chat to them? askt them how old they are and wht gr there going into nxt yr? what? :D Hope I get some good answers. :D