I am under the hut at the very beginning, and there are two doors. I've tried left clicking on them, right clicking, and walking into them...what do I do?

*edit* I'm an idiot. It's just a hidden button...

If a door is not locked with a button or a key, you can just run into the doors and they open. Clicking while standing in front of them works, too. Also, buttons are all "hidden" to some degree because of the age of the game and the graphics standards at the time. Looking for buttons is a pixel hunt.

I believe in some cases also you click the center line/crease between a pair of doors to cause them to open, like in the Burgomaster's mansion/Barovia homes, etc.