SNAB (Salters-Nuffield Advanced Biology) is largely taught in context through real-life biology. For example, we start with an account of cardio-vascular disease and then go on to look at the factors that make it more likely that any one of us will suffer from a stroke or heart attack. This allows us to introduce the biochemistry of fats and carbohydrates bit by bit, as you need to know them to understand about strokes and heart diseases, rather than all at once. Some parts of the course are very practically based and you should be prepared to become involved in practical work to develop the necessary skills. Reading around the subject is also important as this will broaden your understanding.