Go to a bookstore and browse the beauty books. Don’t just look at the spines on the shelf, take each one down and flick through it. Which one would be most useful for you, as a ‘girl in training’? Buy the one you choose.
What do you think the cashier will be thinking when you take a beauty book to the checkout? It could be a present for someone, but it isn’t is it? If they offer to wrap it as a gift, tell the truth.
