There are many ways that you could go about online to search for the right information on iOS 10 upgrade, however the best way would perhaps be through a reliable niche specific website that specializes in iOS operating systems. There have been several versions of the iOS operation system that have been released over the past several years, the most recent one being iOS 9 and iOS 10 is what is expected next.
Since the iOS is a new version release which is expected to incorporate various changes and updates, it would be important for you, as an iOS 9 user to look for the right website that provides detailed tutorials on iOS 10 Upgrade. This way, you would be able to follow through things with ease and be able to have the latest iOS version installed on your device.
It does not matter whether you have an iPad, an iPhone or any other Apple device, so long as it is built on the iOS platform, you will have to play an active role in learning new things as and when they become available. This would be in your best interest as not knowing about a new release or not knowing how to make the most of a new iOS version release that you already have installed on your device would leave you behind in technology.