Using media is a great way to enhance your site's appeal or break up large blocks of text. There is not just one way to add media as depending on which paragraph or block you are using can dictate how the media is uploaded.
The easiest way, which also allows managing of all media, is to use the Media Overview admin page. This page allows you to see all media that has been uploaded to the site and the ability to add new media or update existing media. One of the best things about using the media overview process is the ability to update media quickly and efficiently across the entire site. You don't need to remember all the places the media was used as updating the media item will make the change site-wide with just a click of a button.
Many paragraphs also allow media to be uploaded within them. For detailed instructions on how to do this, please visit the paragraph type you are looking to use. Further information is provided on each paragraph type page regarding how to add media items directly and how media is used in each paragraph.