If you or your dog are just beginning look for a club that has a good foundations class. Trust me, the wrong intro to an obstacle can have lasting adverse effects.
Perhaps check out a trials competition, talk to the competitors from different clubs. Ask what it is they like about their clubs. Watch the competition for a while, yes, you and your dog can do it also. Quincy was four years old when we started agility, I remember the joy when we could do multiple obstacles in a row. Or, when we ran a full course with not one verbal prompt! Check it out. http://www.aac.ca/en/clubs/main/