This book is written to help you understand concepts of module, and its preparation procedures. In this book you will find vital issues such as Open learning, Distance learning, and E-learning learning. The book also informs you how educational module prepared (module design process, application of relevant theory, rationally of module preparation, guidelines of writing module learning outcomes...). This book will serve the needs of teachers found in the university and college level, and those who need to prepare educational module in general. The contents of the book are characterized by clarity and simplicity. The concepts are clear, in non-technical language and have generous examples, activities, and procedures etc.