This book is about Complex Numbers .To be more precise, in contains introductory examples and exercises that are accompanied by the apropriate solutions .So, once you get stuck you can follow the solutions and improve your abilities.Here are some of the contents in brief: Set of complex numbers, modulus of a complex number, locus of a complex number, euler's formulas, polar form and cartesian form, hermitan matrices, zeros and poles, trigonometric form, Moivre's formula etc .