iCloud - what's a cloud ?
/You hear the term used a lot. It’s just a computer (somewhere) which stores your stuff - outside of your computer and outside of our house. And, to add to the confusion - there are lots of clouds - Google, Dropbox, Microsoft, Apple and many others.
The reason most people need a cloud is, to backup (copy) your stuff to a safe place, in case your computer breaks or you drop your phone overboard. If this happens, you can go to your cloud storage and get back the info you stored there. That could be a big deal.
Since a lot of people have iPhones, here’s Apple’s instructions on backing up your iPhone to Apple iCloud. You create an iCloud account ( free basic service but they will be very happy to sell you more storage).
Check with your phone’s website for their cloud suggestions.
Here’s general explanation of iCloud (it does way more than back up)
How to get an Apple ID to get an iCloud account
Here’s how to back up your iPhone to iCloud
You can always contact Apple support - or the best way -ask friend