The Last Man on the Moon is a unique entry among books about the Apollo program, in that Gene Cernan is one of only three men who flew to the moon twice (Jim Lovell and John Young are the others).
The book's biggest surprise was Cernan's low opinion of Buzz Aldrin. To my knowledge, Cernan is the only astronaut to portray Aldrin as overrated--and I'm convinced there's some professional animosity behind it:
Cernan had serious problems on his Gemini 9A spacewalk, and he was damn lucky he even got back in the capsule. In fact, I think Cernan was just as lucky he wasn't able to get his Manned Maneuvering Unit fully underway during that EVA, because I doubt he would have survived it. But he did survive, and for better or worse, Cernan's experience became a lesson that EVA training wasn't yet good enough. So, in the wake of Cernan's adventure, Buzz Aldrin decided to train hard for his EVA on Gemini 12. That EVA was a big success, and Aldrin's basic approach became the model for later EVA training. It appears Cernan took it personally, and I think it's here that Cernan's disdain for Aldrin was born.
I think Cernan even grandfathers his animosity, making it out like he never liked Aldrin from the moment they met. After reading Cernan's account of the Gemini spacewalk episode (and Aldrin's account, too, in Men from Earth--Aldrin's story is pretty benign, IIRC), I take everything Cernan says about Aldrin with a grain of salt. He doesn't like Buzz at all, that much is clear.
One of the book's drawbacks is that it takes a higher altitude view than it needs to. Cernan isn't the most eloquent of the early astronauts, although his coauthor, Don Davis, helps him read respectably. Cernan clearly loves his family, and appropriately, his long-suffering wife Barbara gets plenty of empathy for her trouble.
I went into the book really looking forward to reading Cernan describe his two moon flights, Apollo 10 and Apollo 17. Specifically, I wanted to feel what it was like to turn back from a lunar landing approach without consummating the landing (Apollo 10), and I wanted to imagine putting the EVA suit on and walking around in his moon boots for a third day (Apollo 17). If anything, Apollo 17 should have had the most coverage of any topic in the book. But his coverage is too light, his descriptions summarized rather than expansive. The feeling of 'being there' was fleeting, as was the feeling of traveling on the moon, and I never got a good feeling of the passage of hours and days on the moon.
(And I'll admit here that I almost feel like I cheated. Before reading Cernan's book, I had already read David Harland's magnificent book Exploring the Moon: The Apollo Expeditions, which has essentially minute-by-minute coverage of every lunar EVA. There is, in my opinion, no better resource for the moonwalks outside of the official NASA documents.)
We know Cernan spent three days on the moon, but I'm pretty sure it took me only about thirty minutes to read what he wrote about it. It left me disappointed and unsatisfied.
On the other hand, I thought Cernan's evaluation of his Apollo 17 moon walking partner, Harrison Schmitt, was above average. Schmitt was the only professional scientist to walk on the moon, but he didn't get his ride until it was obvious that Apollo 17 would be the last hurrah for the Apollo moon landings. Cernan makes it clear beforehand that most of his fellow pilot-astronauts had been against having a scientist in the LM pilot's station. And to his credit, Schmitt studied hard and certified himself as a pilot ahead of the mission, and he acquitted himself quite well, by all accounts. Cernan was satisfied that Schmitt earned his stripes and wasn't just along for the ride.
Cernan even adds the disappointment of leaving out Joe Engle, an X-15 veteran who was Cernan's original LM pilot, so we get a little of the bitter taste of knowing Engle was the best pilot from that era not to go to the moon.
My big takeaway from the book was learning about Cernan's approach to flying and managing his astronaut career. He always took chances, always got his foot in the door when it opened a crack, always pounced on opportunities given to him, always pushed the proverbial envelope--and he sometimes paid prices for going too far (like his boneheaded helicopter accident in 1971), but more often than not he came up a winner. After Apollo 10 was finished, he had only a distant chance to command a moon mission, knowing he'd have to get back in line again and wait--but a slot as commander was what he wanted, so he threw his hat in the ring again. And one by one, all the ducks lined up in a row for him. His gamble proved very lucky, indeed.
If I learned nothing else from this particular book, it's that if you want to be an astronaut, you have to always be on--you can't back your foot off for one second.
I was hoping for a better book than it really is, but it's still above average.