Windows 10's changes are as big as the Start menu and as nitty-gritty as the command prompt, with lots of interesting stuff in between. Let's dig in.
Try the Windows 10 beta safely: Here are the hardware requirements, and how-to's for preparing virtual machines and partitioned hard drives.
Brave souls can get a very, very early taste of Windows 10 today.
Windows 10 can dynamically shift its interface to function with keyboards, then touchscreens, and back again. Here's a video of the Continuum feature in action.
These fitness and nutrition apps will help you get active, track your progress, and feel your best.
Microsoft's OS is due next year and will run on all devices
Windows 10 bends to PC users, rather than bludgeoning them with a stick called Metro.
It'll be delivered via a new "Windows Insider" program that will let testers discuss issues with Microsoft engineers.
Microsoft executives said Windows 10 is Microsoft's response to feedback to consumers and businesses who still weren't satisfied with Windows 8. And you'll get to try it out for yourself.
If your office is still running Windows XP, you might be violating government regulations.