Lovely book! She starts with basic paint- and brush- handling techniques which are then developed and combined in subsequent chapters. Each comprises several step-by-step projects on a theme: flowers/plants, animals, food, objects, people, places. I found them so satisfying to do and completed every single one!
I'd recommend gouache to anyone who wants to paint but finds watercolour intimidating and doesn't have the space to set up acrylic/oils.