Go to this link to find the club that is closest to you.
The Winnipesaukee club actually out of a different site away from the airport, but do float flys on Lily Pond.
http://www.modelaircraft.org/clubsearch.aspx
Give a call as to when they are around and go hang out for an afternoon. If you have your own planes bring them along and see if you like the folks in the club, most will always give you a go at flying whether you have your own equipment or use someone elses.
If it is something that you intend on keeping up with, keep the link above and start at the home page, get your AMA license, most clubs will require you to have it and it is short money for what you get.
I have some pics that I have been meaning to share of a 1/5 scale piper without her dress on for anyone that would like to see what one of these looks like before getting its skin.
Have fun it is a great hobby.