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I think it would be better to start with offline play.
The principle is simple: download a save file, play, and send it to the Tournament Coordinator. The prize pool will be from voluntary contributions – it’s too early to talk about that, but I thought the website administration might be willing to contribute to get things started.
You can find well-balanced maps, for example, here:
http://www.blackknights.narod.ru/h3_maps.zip or here:
http://www.heroesleague.ru/maps/