Windows 10 is coming July 29, 2015. It is probably best to learn about this latest operating system directly from Microsoft. These links might help.
- How to upgrade from Windows 7 or 8 for free
- Windows 10 FAQ
If you plan to upgrade from an earlier version, please carefully read the entirety of the “Specifications” page. There are a few things you will need to consider. For example, watching DVDs on your computer running Windows 10 will require separate playback software and automatic updates will be required in Windows 10 Home Edition.