Microsoft has made the completely-free Windows 8.1 update available in the Windows Store. To get it, all you need to do is load up the Windows Store on your Windows 8 machine and you’ll see it on the main page.
Click the link in the Store, follow the instructions, download the upgrade assistant, let it do its thing and reboot when it’s done. Voila, the Start Button is back. Expect to download anything up to 3.63GB of data during the process.
If, for whatever reason, the update doesn’t appear for you when you investigate the store, click on this link, download the 5.2mb file that it leads to, and start the upgrade process yourself.
If you’re not sure yet why you should bother with the update, check out our article that details ten things everyone needs to know about Windows 8.1.
Our verdict: You definitely should.