Hot Hardware published a review on the Here's How To Keep Microsoft's Nose Out Of Your Personal Data In Windows 10 A quote from the article:

Amid the privacy concerns and arguably invasive nature of Microsoft's Windows 10 regarding user information, it's no surprise that details on how to minimize data leaks as much as possible have been requested. To this end, we've put together a quick guide to help out.

If you are using Windows 10, or plan to upgrade soon, it's worth bearing in mind a number of privacy related options that are available, even during the installation/upgrade.

 Here's How To Keep Microsoft's Nose Out Of Your Personal Data In Windows 10 @ HotHardware