If you read one book on anxiety, make it this one. It is written in a really easy to read style, clearly and simply explains what happens when panic attacks strike, and illustrates that anxiety about your anxiety makes it worse! It has some simple and useful suggestions for helping the reader deal with their own type of anxious feeling too.
This book helped me to understand how prevalent and 'normal' anxiety is across society, and helped to reduce my anxiety about dealing with any panic attacks, either for myself or others.
Best of all, it does not patronise with oversimplification, neither does it blind the reader with scientific vocabulary. It is so 'friendly' that it took me just 2 short sessions to read it from cover to cover. I'm keeping it handy for ready reference too!