The text doesn't provide any specific information about where to find your product key for Windows 11 or how to obtain it for free. However, based on general knowledge about activating operating systems like Windows:

1. If you purchased a retail copy of Windows 11 from an authorized retailer, the product key should be printed on the packaging and/or included in documentation.

2. For OEM (Original Equipment Manufacturer) versions installed by computer manufacturers directly onto new PCs or laptops, check for stickers with 'Windows' or your PC's serial number usually located under the keyboard, inside the battery compartment, or on a label attached to the bottom of the device.

As for obtaining Windows 11 product keys free of charge:

1. Microsoft occasionally offers legitimate activation codes through promotions and limited-time offers.

2. Sometimes educational institutions may qualify their students or staff members for discounted or even completely free licenses.

3. Be cautious about websites claiming 'free' keys, as many are likely scams attempting to install malware onto your device.

Always download software from trusted sources like Microsoft's official website (windows.com) and be wary of offers that seem too good to be true regarding free operating system activations.

Windows 11 product key for free