How to add events to your iPhone's calendar in 2 ways, and edit or delete them later

To add an event to your iPhone's calendar, open the Calendar app and tap the plus sign at the top right of the screen.

How to add attachments to Calendar events on an iPhone with iOS 13

It's easy to add attachments to Calendar events on an iPhone with a new feature in iOS 13. Here's how to do it.
CNET

You Can Set Up a VPN on Your iPhone in Minutes. Here's How

Whether you want to be protected while traveling or you like the extra layer of privacy while browsing at home, a VPN can help. Here's how to set up one on your iPhone.