This document discusses developing a professional learning network (PLN) on Twitter. It provides an initial snapshot of the author's PLN, which includes the accounts of Edutopia, George Couros, and The Music Teacher. These accounts provide resources on educational topics, strategies for developing a PLN, and support for teaching music. The document then shares a later snapshot showing the growth of the author's PLN over time. It also outlines ways the author has contributed, such as using hashtags, participating in discussions, re-tweeting valuable information, and discovering new accounts.