Now that you have a basic handle on the Bum-Ditty, there's a couple options for your next steps. The lesson for "Your First Banjo Chords", or "Clawhammer 101" are some great options. Learning chords is also an absolute necessity and that should be your next step, but you could also checkout Clawhammer 101 and learn to play individual strings and your first Clawhammer melody. If you feel like you have a basic handle on the bum-ditty, chords and can strike with one finger already then the world of Tunefox is your oyster. If you ever feel like you are struggling, then don't be afraid to come back to the basics. The greatest players have an incredible grasp on the foundational elements of music and their instrument and are always working to deepen their understanding and command of those foundational elements.
Stay tuned, keep plucking, and let us know if you need any help. We're here for you!