The learning progress of children in preschool and early school age is enormous and pivotal for their future educational trajectory. Therefore, learning in this age group has received increased attention in recent years. However, there has been a lack of a comprehensive work that systematically addresses learning in this age range. This book aims to fill that gap by primarily adopting an educational-psychological perspective. It explains essential individual learning prerequisites and learning environments for success, as well as inter-individual differences and challenges in the learning process. The book also provides information on the key developmental steps in learning to read, write, and calculate, discusses various support approaches, and consistently seeks to involve readers themselves as learners.