Learning in private keeps knowledge fragile. You think you understand until you try to explain. The gaps only become visible when you attempt to communicate.
Learning in public forces clarity. When you write or speak about what you are learning, you must organize thoughts coherently. The audience, real or imagined, demands that you make sense.
Share as you learn, not only after you have mastered. The process of sharing deepens understanding. The feedback from others corrects mistakes. The commitment to share motivates continued learning.
What are you learning that you could share?