We use elements of MBTI at work, and I knew a little of the jargon and had done a test, and had been referred to some of the standard works. I "kind-of" understood, but did not really feel any of the behavioural descriptions really clicked for me. As a lunchtime browser of bookstores I picked "What Type Am I?" off the shelf and suddenly I was able to see myself through the MBTI for the first time. I found the style very easy to read, and the suggestions about working with myself and others to be very practical. For me the format was easy to follow, and I enjoyed the style, content and humour. It's insightful but not heavy. I bought one for my adult daughter.