This book would be interesting for school teachers, educational psychologists, as well as medical professions dealing with children and young adults. It focuses on variable factors that cause or worsen learning difficulties. It exposes the diversity of the condition as many environmental and innate elements are accused. We tried to avoid complicated scientific terms and made it in a simple language as we strongly feel that the manuscript would be beneficial for many sectors including parents of children with learning difficulties. We hope this would be helpful as a practical management tool of knowledge in the field. This would represent a first part of a series of chapters in this vital topic.