Math's is not my strong point but this book is excellent at explaining complex concepts in 5 or 6 lines. It's also extremely comprehensive, and I haven't found a maths concept that I'd like to know about that it doesn't cover. I would thoroughly recommend this book to anyone who would prefer to be a bit better at maths, either for your own personal interest or for academia.
Overall, I cannot speak highly enough of this book, and for a tenner you can't go wrong! :-)