Bartlett and Taylor's excellent 'How to be a Better Rider' has superseded this book.
However, 'Advanced Motorcycling' isn't a bad book. It includes more information than the rather poor 'Pass Your Advanced Motorcycling Test'. (Though it's less comprehensive than `Motorcycle Roadcraft'.)
Those looking to read around the subject could enjoy 'Advanced Motorcycling' as for its historical insight. Potential readers could include those with an interest in any of the advanced tests (IAM, RoADAR or BMF Blue Riband). Trainees undertaking the renowned OCN level 2 or 3 course with the likes of RideDrive might be interested too. Pre-advanced riders, such as those taking the Enhanced Rider Scheme or BikeSafe, could find 'Advanced Motorcycling' offers historical insight too.
In all cases, however, 'How to be a Better Rider' offers more contemporary, better advice.