HTML 5 is a set of standard instructions that a modern browser should be able to use when rendering content from a website. The iPad's Safari browser uses the HTML 5 standards so there is nothing to install.
It's the same as any other app. 1. Go to the App Store in iTunes on your computer, or in the App Store app on your iPad 2. Search for "quickoffice connect mobile suite for ipad" 3. Click the "buy"...
If you mean like apps, there is a app store in the apple ipad or ipod if you are looking at this. If you cant find the app store anywhere go on the internet and go on apple.com and I think they have...