
For damage effects you can have small craters, large craters (very destructive - they'll make a building sometimes just turn into a heap of rubble) or city-grid. This one I hardly use at all. I don't always like the type of layout it gives, but try it out.

These are handy. The text button will allow you to write on your map. The "fill" and "fill range" buttons allow you to add increased amounts of the same type of terrain instead of clicking until you get cramps.

Here are some more interesting buttons. You can cause the nationalities to switch sides on the map, convert streams into canals (yes-no choice) and lay railroad track.

These last three will let you save your map, go back to main editor screen (to change terrain type, lets say) or to display the "help" menu for making maps.
You'll get comfortable with these buttons only with practice. With them, you can make some very beautiful maps.
Wild Bill