This book is written for students dealing with electronic field. It is based on lecturing theory and giving example classes for more than a decade. Hundreds of books deal with the theory of the topics of this book in a professional and educational manner. The aim of manuscript is not to be part of this valuable collection of these books but just a tool to guide and accompany the students to solve electronic problems in a pedagogical and easy manner. This book tends to give the student the ability to analyze any problem dealing with the field and from the additional information, calculate the required value and answer all type of questions regarding the problem under study. This book is divided into six parts. The first part deals with digital circuits whereas the second part deals with dc and ac circuits with different ways of solving the same problem to let the student feeling the importance of some valuable theorems like superposition or Thevenin. Electronic devices are considered in part three of this book while control systems are considered in part four. We discuss amplifier circuits in part five and part six deals with modelling problem. Appendices at the end of the book.