We looked around for a book or training resource we could supply to end-users we meet all around the world, and found that, while there are lots of resources, most aren’t readily available via Amazon or a similar web-based shop, and unless you enrol on a training course you can’t access them at all. Those that are available tend to focus more on system design than maintenance. This book came about to address these issues and provide a readily available starting point for the ‘novice hydraulic engineer’, to encourage everyone to then go on to take a practical hydraulics course using the resources listed in the Resources section at the end of this book. In this way we hope we can help educate the next generation in how to work safely with hydraulics and to better understand the role of hydraulics in an increasingly interconnected world.