You will find that this textbook has a logical structure that makes studying easier.
The Mixed Methods Reader
A nice touch in this textbook is the list of common mistakes to avoid.
Research Design: Qualitative, Quantitative, and Mixed Methods 6th Edition ( PB )
The paperback edition is a solid choice if you want to save some money on textbooks.
Research Design : Qualitative, Quantitative & Mixed Methods Approaches USA Stock
A nice touch in this textbook is the conversion chart for units of measurement.
