Aaron Hillegass, who worked at NeXT and Apple, now teaches popular Cocoa programming classes at Big Nerd Ranch. At NeXT, he wrote the first course on OpenStep, the predecessor to today's Cocoa tools. This book is based on the big Nerd Ranch course and is influenced by more than a decade of work with OpenStep and Cocoa.
Adam Preble learned Cocoa programming from the first edition of this book. After too many years of professional C/C++ development, today Adam writes Mac and iOS applications at Big Nerd Ranch, where he is also a Cocoa instructor. He is frequently filling in the gaps between work and family time with pinball machine software development and countless other projects.