I disagreed with the author's demonstration of the Bench Press in this text. I firmly believe based on my own training experience and the results achieved by my clients that the grip should be no wider than shoulders and that elbows can safely come below 90 degrees, i.e. barbell touching the chest. This will prevent overtraining the shoulders in the Bench Press and instead isolate upper and lower pectorals as well as the triceps.
Otherwise, this is a great resource with lots of essential exercises, clearly written explanations and cues, and helpful illustrations throughout.