Asset Library

Your Asset Library is your repository for all the imagery that you want to use within your Brand, in your templates, emails and landing pages. 

Upload Images

Upload your own images using the Upload button: 

And give it a name, optionally assigning it to a folder or tag.

Import Stock Images

Alternatively, you can Import Stock Images. From Pexels:  

See General Navigation for information on how to use the Search, Folder and Tag options on this list.