I have the sixth edition of this book,and i think that althought is not the best book of the world is quite good book.You must learn about basic electricity first, a book like "basic electricity" by Nooger Van Valkenburgh is a very good one.You must know the Ohm law,Kirchhoff laws,simplify pasive circuits ( serie circuits,parallel circuits and complex circuits,what is a capacitor a inductance, thevenin's theorem and other things like that) The content of the book is based on the semiconductor components.The book explains what a diode is,how it works,the reason of his function,his characteristics,and many application circuits (How to convert ac current to dccurrent, how to change the level of dc voltage of a wave,etc);the book also explains what a transistor is and his apllications(amplifiers, an element for do digital circuits and the base of electronics),the book tells you how to polarizate a transistor,how amplifies and his models,and many circuits.Finally the book tells you what an operational amplifier is,power amplifiers,oscillator circuits(a circuit that converts dc current to ac current) and other control power dispositives. The book also have many problems,some illustrations,and a basic course of PSpice( a program for simulate electronic circuits).