The book's author, Marc Segar, was killed in a car accident almost ten years ago, but someone close to him decided to make his book widely available. Many passages, such as this one, from the chapter "Distorting the Truth", are unaffectedly -- and I'd imagine unintentionally -- poignant:
Sarcasm is when someone says one things but means the opposite. For example - in response to hearing someone burp, someone else might say 'how polite'. The easiest way of picking up on sarcasm is by listening to the tone of voice. You may need to defend yourself against sarcasm at times and this will be covered in the following chapters.