The woodshed is a farm building found behind the player's home in Kesselinperä. It's within easy walking distance, so don't bother starting a car to drive there unless you need to carry more than a couple of things.

To find it, go southeast (away from the lake) from home. When you reach two post boxes, turn right (to south) and follow the track in that direction. There is no road sign - if you see one, you've gone much too far.

Several useful things can be found here: