Clear exposition from first principles without asking the reader to reinvent the wheel. Concise leading worked examples. Well paced. Level and treatment is well pitched to high school leavers and above, easily navigable and readable, if a little condensed at times - see below.<br>Slight criticism: only odd numbered questions I each exercise have answers - should be all the questions in this day and age, and there should be full solutions to at least three questions per exercise set, i.e. setting out how to approach a trivial starter question,  a main gubbins question and finally a Sunday roast question with trimmings.. At the moment only worked examples have solutions set out,  and at times these can be truncated and terse.