The booklets are full of Questions & Answers. I’ve tried to make the answers as clear as possible and I’ve made it small enough to pack in your bag. As many questions relate to different subject areas, I decided to cross-reference each question with other relevant answers in other chapters. The numbers at the end of each answer correspond to other related questions. I have done this to keep the book small and to the point. I have used he and she interchangeably to give the answers a more personal feel.