Head First Design Patterns Undoubtedly opinions change over time, and seeing as I’ve waited quite a while to review this book from when I began reading it I’ve had time for the book and its concepts to percolate. My final opinion is that this book does offer a good entry level look into design patterns, and for those who take the time to read through this book you will benefit greatly to continue onto its inspiration, the original Gang of Four read, or also onto Fowler’s Patterns of Enterprise Application...