If you already have Windows 10 installed on your PC, laptop, tablet, notebook, ultrabook etc of any version and you want to upgrade to the ANNIVERSARY Update of Windows 10, go to this link and download the Upgrade Wizard HERE. Now where it says Get the Anniversary Update now , click on , as you see in the image below:
Depending on the speed of your internet this takes time. In my case it took me two hours, (download, reboots, setup and installation THE MACHINE DOES EVERYTHING) so you better charge your battery on your laptop 100% before downloading. I recommend you to connect your laptop with ethernet cable if you know the settings, if not, just use your WiFi. In the case of desktop computers connected via ethernet it is much easier. Happy Upgrade.