@walter76 Yes, but it's not public yet. I will publish it this week, maybe later today if I have time. It uses D9=X, 10=Y and 12=Z and does the Z axis homing and then XY together as this is normal for CNC. It also has the EleksCNC defaults of 400 steps/mm and lower speed/acceleration.
Is this what you want or you prefer all on D9, I think that should be possible but would require separate homing, Z then X then Y?
The forum now has a wiki page that you can see at the top of the Eleksmill forum. The link to the forum is below, which should include assembly instructions, electrical connections, and some software setup stuff. As for operating the machine, you learn as you go based on the software you choose to control it. If you posted more specifically the OS you use and what GUI you use to control the board, it would make it easier to help. For example, I use Linux and Candle control software (I am in the process of upgrading the nano clone to Grbl 1.1e/f from Grbl 0.9j).
Used hardware I ordered from McMaster Carr and Misumi linear bearings to rebuild my machine (also ordered some stainless steel rods from Misumi that havent arrived yet). In the past, I have done test cuts where I drive the engraving bit too far into the copper just to see it mill the right directions (seen as the large copper cuts in the photo). Today, I z-probed one position and then milled the copper to a little bit larger than the copper thickness, here are the results. As you can see, I need to use the height map so that all areas are cut, but the results are very promising.