One suggestion (based on the tutorial):
Clearing a forest square needs to be handled in a different manner. Right now, you just click on the "clear forest" button in the build menu and you can instantly clear as many forest squares as you want, and without cost - in reality you are doing little more than editing the map. At a minimum I think you should only be able to designate one square per season for clearance (it would be nice one day to see little workmen head out to the forest and start chopping down trees ) . Also, I think when the square is cleared (perhaps with a cost?), you should get some sort of materials boost from all the lumber.
This was something that used to annoy me in WoM, too.
One small error I noticed: During the tutorial, it says that when you select a new spell to research, you should hit the "learn button". There is no learn button, but there is a "done" button. A learn button would be preferable. Just FYI.