This book includes selected papers from the Hong Kong Association for Educational Communications and Technology (HKAECT) 2023 International Conference. It provides readers with a collection of insightful chapters which delves into the realms of data visualization, artificial intelligence (AI), virtual reality (VR), and augmented reality (AR). It also reflects on the dynamic shifts in online learning, blended learning, and self-directed learning. Part one of the volume includes case studies and examples of the integration of advanced technologies, such as data visualization, generative AI, and mixed reality in education. Part two shares experiences and observations from educators who embrace online learning, blended learning, and independent learning. Part three investigates the influences digital education has on learning, teaching, and society as a whole. The book paves a path for thought-provoking discussions on the future of education in a digitally connected world. It is a vital resource for educators, administrators, policymakers, and learners seeking to navigate and thrive in the rapidly evolving world of digital education.