In this book, the author, writing in the first person, describes his life from slightly before the time he applied to be an astronaut, his selection as an astronaut, his training and his eventual trip to and from the moon. There was a fair amount of material dedicated to the training needed to be an astronaut and moon walker, more than I've seen in the usual astronaut biographies. The book also includes many photographs in both color and black and white, to help the reader understand Jim Irwin's life and times at NASA.