How to book now and upgrade Win10 for free?

Windows 10 was officially released on July 29, 2015. It is probably the best Windows to date, Microsoft official said. Windows 10 is now available for free upgrades, and this free offer is available only on time. Book now to upgrade. To get started, follow the steps below.

Easy to get a free upgrade – Here's how:
1. To book a free upgrade, click the Windows 10 icon in the lower right corner of the taskbar.
Can't see the Windows 10 icon? First, try running Windows Update for your existing Windows 7 or Windows 8 PC and installing any updates that are needed and recommended.

2. In the "Get Windows 10" application, click "Book Free Upgrade" in the application window.
3. If you would like to confirm this reservation, please enter your email address.
4. We will download Windows 10 to your device and notify you when it is complete. You can cancel your reservation at any time.
Note: This Windows 10 free upgrade is only available for PCs and tablets. The free upgrade for Windows 10 Mobile will be available for most phones later this year.
After booking, you are added to the Windows 10 upgrade queue. Note "Get Windows 10"; notifications sent in the next few days or weeks. Once notified, you can upgrade now or choose the right time to upgrade.