I live in the US. I've used iPads in The doctor's office. I know how to input text on them and tap onscreen buttons; I haven't any idea how to get to the home s

I live in the US. I've used iPads in The doctor's office. I know how to input text on them and tap onscreen buttons; I haven't any idea how to get to the home screen to launch another app, much less do anything else. The most technical thing I've I've ever done with an iPad or iPhone is entering a URL in the address bar.