How can a 15 year old bicureous guy meet guys to experiment with?

He might be sittlng next to you in class or checking you out in gym. There are going to be some in any group you happen to be in, the problem is finding them. You could suggest it to your best friend. A lot of guys experiment at your age. The biggest problem at your age is if you pick the wrong guy to approach and he tells everyone. High school can be hard enough without having to deal with that. If you decide to approach someone, be prepared and be able and willing to deal with what might happen.