When learning a new instrument, nursery rhymes are a great way to start. Any song that you can sing or think through easily, are great first songs. This one works great with the slider. Slide it to "easy" for just the melody and a few fill in notes, or set to "Hard" for a 3 finger workout. The licks here are great. There are simple licks that works well with the slider, and the #2 licks have a bit more challenge and authenticity. Remember, when you select a measure you can use the sliders in the pop-up window to affect just that measure.
With 2 Melodic, Scruggs, and Single string licks per measure there's a seemingly infinite amount of possible arrangements to create here!