If you're having problems with Favorites, there are three things you can do:
You can also read more about Favorites on our Favorites page.
There's a tutorial and user guide built into Favorites; you can access it simply by tapping the "i" button in the lower-right corner of the main screen - this will show the About screen.
Then, just tap the "Tutorial" button in the About screen, and you'll see the tutorial. You can view the tutorial at any time.
You can also view the tutorial online (it's narrow because it's designed for viewing on an iPhone!)