I'm so glad you like my game! :D
The best clues I could come up with are given by the glowing books found around the map (like the 3 in the barn). There are 12 in the main area (in front of the barn), and 16 total. Did you find them all?
Crouching is just to walk more slowly. It's not important for completing the game. :)
You didn't mention the campfire, so I will tell you that it's very important to reaching the 2nd area!
Have fun! :D