The fun matches are great like Debjen said! We always try to keep our eyes open for the local ones, especiallly when we have puppies that we are intending to show. There are no points, but it's great practice for the real thing. If you have never shown before and think you might like to, the fun match is the place to give it a try. No pressure, just fun; and they are usually fairly small, I think the largest I have seen was maybe 30 or 40 entries. And depending what type of fun match it is, I believe you can enter a dog as young as 3 or 4 months.
If you think you might be interested in either watching or participating in a fun match, contact one of the all-breed kennel clubs in your area. I believe they all have at least one fun match every year. Our club has 1 sanctioned B match every year in the summer.