Hi Marek

I am a Mac and occasional Windows user. The Mac Library and its contents cannot be located with Finder under normal use to protect it from accidental changes.

So to find the user Library you need to click on Finder/Go and hold down the Option key, the Library icon will then be shown, clicking on it will open the Library. Click on Application Support and scroll down to the Moi folder. As Michael mentioned the Option key is equivalent to the Windows Alt key.

Hope that helps
Alan