Excellent book - concise and well written, easy to understand. Acquaints you with the the interface then sketching and finally modelling - very useful examples and projects. With dedication and practice - this book will move a beginner to intermediate quite fast. Additionally, it will teach intermediates a few tricks they may not know. Very happy with this purchase. Be aware that despite the title the book is geared more toward 3D printing than CNC as the CAM section is very small - but nevertheless includes and overview and basics. Would like to see this author write an entire book on CAM for hobby CNC.