Note: In general, you don't need to follow the chapters in numerical order. However, if you are completly new to 3D printing, it is recommended to start with the 'Introduction' chapter before moving on to other chapters. This will help you understand the main use cases for 3D printing. In addition, if you directly want to jump to the 'first print' chapter, in which you will be guided through your first printing experience, you are free to do that - everything is explained in the chapter independently from the other chapters.