This book is a spectacular overview of forecasting techniques and probably the best possible introduction book. The plain language is very easy to understand, and further readings have been provided tediously. I agree that you have to have some understanding of reading equations, but you don't have to be a mathematician in order to understand this book. If you feel that you might not be competent enough, start from the first chapter and advance. The author begins from the very basic ideas and adds on in each reading, where after finishing the book I felt that it prepared me for more advanced scientific journals.
Even though I found the examples very informative, if you're looking for a McGraw-Hill type of university textbook that provides step-by-step examples in every single topic, this book may not be right for you.