How do you decide where to go in Amnesia: Dark Descent?

Do we need to refer to any kind of guide for this game? I think I'm still at the first level and I have somehow reached the wine cellar. I've been wondering around aimlessly but can't figure out where to go.

So I checked the walkthrough and it appears I had to do a ton of other things before I have to go to the Wine cellar.

How do I figure out where to go? Is there any brief area guide that I can use?

Solution 1:

There is an excellent cheat guide bundled along with the game. Go to the game folder and look for the file super_secret.rar. Enter the password and inside you'll find some design docs for all 3 chapters which includes maps and more information.

One of those image files also contains a flowchart of the order in which you need to visit the areas.