Thank you for the tips mate!
At the moment, for the first time in my life, I'm drying mushrooms :) In the evening, relaxing from a day of work in the city, I wandered through the woods and found 6 Parasol Mushroom (Macrolepiota procera) :3 Autumn finally is starting for real, it was an intense week of rain and mushrooms bloomed everywhere (in the other hand, abnormally, these past days temperature jumped from 16 to 30 degrees till the end of the week). Since 1 Parasol Mushroom is enough for a good meal, and more will come, it was time to dry for the first time (freezer was a solution, but drying sounds better).

I have not built a rack yet, so I could not do it Erkkas's way =) but done it with a small wood stove no one was using for some time, with the door opened and mushrooms inside, just a few wood from time to time to keep a little heat. Now its time to sleep, tomorrow I'll see how it went. In the weekend I'll build a rack :3