Zarah C. Gagatiga, a teacher librarian and blogger, gave a presentation on blogging. She discussed what blogs are, how they can be used for teaching and professional development, and how to start a blog. Blogs are a form of social media that encourage interaction and collaboration through features like comments. Gagatiga emphasized the importance of digital citizenship and maintaining an authentic online identity and brand when blogging. She also highlighted reasons to blog such as for teaching and learning, and provided tips on different blogging approaches.