It is very easy to use, in summary:
Turn it on. Run Metaza Studio. Put a piece of material to engrave in the machine in the centre. Clamp firmly. Polished aluminium works well but you can use any metal or plastic. Select material shape in Metaza Studio and set the size to match your actual material. Create your design, keep the material shape in the centre. Then click Print. Select “Properties/Image Correction” and set the material type and resolution. Click OK to start. The engraver head automatically lowers down to find the surface of the material. The head tracks the surface so you can print on curved surfaces within certain limits. There are many other ways to use the machine, read the User Manual here.
Useful video: https://www.youtube.com/watch?v=_hLbtiwQC4M