I found everything written by a pilot to be very helpful and informative however I didn't really gain anything from the last part written by the psychologist. But this has helped a lot with my nervousness about my first international flight which is also my first flight in general for well over a decade.
I've only flown twice and wish I had found this book sooner. The first section describes a normal flight and defines all those noises like nobody else will. The second section describes common malfunctions and disasters but gives the anxious flyer a great deal of reassurance by detailing the multiple systems to overcome these problems. Lastly, another author adds the third section on general anxiety advice and homeopathic remedies. Overall, an excellent book for the fearful flyer that can be summed up simply: If the flight crew doesn't appear to be worried, it's probably normal.
Definitely helps to know exactly what's going on behind the scenes. The rest of it is pretty elementary, but all the more reassuring for that, I guess.