It’s very exciting for me to announce that my very first book is out! Actually, I’m not the only author in this book, there are Giovanni Nugraha and Nia Mutiara whom I collaborate with to produce this great book. This book is about using devise in your rails application. It will helps the reader to start with devise, apply some customizations, add privileges, make remote authentication, and tests. So why wait? Go to the book website and make an order!