Who this book is for
The book is for frontend developers who want to get up to speed on making media content responsive as part of building responsive websites. To get the most out of this book, you should have a good working knowledge of HTML, CSS, JavaScript, and ideally be comfortable using jQuery.
Some of the examples towards the end of the book use popular tools such as WordPress, Less CSS, and Bootstrap. Although it is assumed you will have some prior knowledge of each, the tips and tricks are not complex and could be picked up relatively easily.