I am admittedly old, slow, and heavier than I should be...
After seeing the "Favorites" button on the web site, I figured out how to mark my personal "favorite" content.
When I come in through the app though, I can't seem to locate how to mark something as a favorite. My current practice is, when I'm in the app and have located something I wish to mark as "Favorite", I open a browser, log onto the website and mark it there.
This isn't really a problem but I'm wondering about marking "Favorite" in the app.