Is there a way to keep track of decks you are currently taking? I went in and favorited a bunch of decks I want to take in the future and started two. When I went it today it doesn't tell me which decks I'm currently taking which seems odd.
I think a deck is automatically favorited if you complete the first lesson.
So it should appear at the top of your favorites. Working on a deck always brings it to the top (well, for me it does).
However, if you favorited a lot of decks after that, then it will be buried under those. Just scroll down to see the ones you are working on.
Edit: You might get better responses in troubleshooting, if you move this there.