how do train for a triathlon if you are a kid?

i am 12 and i was wondering if anybody has any advice on how to train for a 100 meter swim, 2 mile bike, and 1/2 mile run triathlon?

triathlon nontraditional- If one were to set up a half triathlon what would the kakak distance be.?

I have this discussion with a buddy about doing a non swimming half ironman distance triathlon. It would have of course a 56 mile bike ride, 13.1 run but start off with a flat water kakak, instead of the 1.2 mile swim. What would be an equivalent distance to that swim? Has anybody done a tri with a canoe or kakak leg?

I am planning on competing in a sprint triathlon in September, what is the best way to train?

I am in decent shape, but I want to get in really good shape. The triathlon is September 28 and it is 1/4mile swim, 14 mile bike and 3.1 mile run. Does anyone know a good training program or a really good way to prepare myself for this?