Notice the bike is a good start. Maybe ask if they ride in the area regularly, and might they like some company sometime. I think that you'll find that most adult cyclists would be more than happy to help foster your interest. As a matter of fact there's been several occasions on group rides where I am occupied poking a hole in the air for my wife and daughter and my son will hook up with some of the faster riders and ride with them. He's 14, and I've taught (well, continue to teach) him good riding technique and ettiquette, and every time this has happened I get good reports back from the other riders and they seem genuinely happy to have had him ride with them. I take him out for hammer fests sometimes too, just him and me, and I know he can hold his line and speed fairly well.
"It hurts so good..."