Hi i just wanted to ask, because before i bought witcher i read much about it and somewhere it was written that you can get free dlc's from within the main menu, my main menu looks like this:

Uruchom Grę (launch game)
Opcje (Options)
Zobacz Uwagi (Notes)
Instrukcja (Instruction)
www.thewitcher.com

So where do i get this dlc from?

The DLC menu was removed with patches and extra content is installed with the patches. So don't worry, you have the DLCs in your game.