Absolutely do the skills lessons, any that you are interested in. They will help prepare you for the the daily challenges. If you don’t finish now, no prob, you’ll come back at some point.
On the other hand, don’t be afraid (as I was) to take on the daily challenges. The point of the daily drills is NOT that you master them, or even come close. The whole point is 1) to establish the habit of playing every damn day and 2) experimenting with things that are scary but also cool, useful and, ultimately, necessary. No one is looking over your shoulder, no one is frowning down at your attempts. 😂 Hey I had to figure this out too!! 🤟