An online tournament for Heroes 4 is planned in collaboration with Heroes League.

My advice: there are 8 maps, so you don't need to learn all of them, although it's preferable to browse through them (even just to broaden your horizons). You should choose 5 that are most suitable and study them as thoroughly as possible. If there's no agreement to play on one of these maps, you can still end up on them when eliminating options – the same applies to castles))).:D :D :D
Also, if you're studying the maps on your own, try to develop a strategy and remember that the game is mainly about the speed of development. So, try to cover half of the map, destroying the main neutral creatures on the routes, in the shortest possible time.
Browse through the selected maps in the editor and pay attention to various surprises.