The Favorites option can be accessed from the Assets tab. Upon clicking the Favorites tab and then clicking the Go To Favorites button it will redirect you to the Content Explorer where you can directly access your favorited items.
The Favorites section in the Content Explorer shows all the Articles and Images you have marked as favorite. You can search for an article/image and mark it as favorite by clicking on the love button next to each article. Once you click on the love button it will show in the Favorites section.
You can de-select an item that was in your Favorites by clicking on the active love button. It will become inactive and will be removed from the Favorites section. However, the item can still be searched and viewed in the Content Explorer.
Note: You can always start a new workflow by clicking on the articles in the Favorites section.