I did do my first runs with the laser head using lightburn, which offers a full functional 30 day trial version. I haven’t really decided whether to buy that software yet as I cannot get myself to cut wood with the current laser head. There is some learning curve but you get some quite fast results. To find the best cutting settings I started with 120mm/min at full power and adjusted the number of passes and steps in per pass. Because I used birch instead of balse for my first tests I ended up with 36 passed and 0.09mm step in per pass. You need to know that according to the Janka scale birch is like 40 times as hard as balsa. You may guess how well those two compare to each other…
As for the laser head calibration you want to select the distance which produces the sharpest/most narrow line. See also this thread.
P.S.: Due to my bad WiFi coverage I ended up doing everthing without a live camera view.