I have had a very little experience of using acetylene lights and the light they give is very nice. A sort of soft yellow. I drove around South Kensington in a James and Browne car and when they looked a bit dim, just turned up the gas and illuminated the street!
First of all, you need calcium carbide not calcium carbonate. Calcium carbonate is just chalk. The lumps we used and I have bought since are the size of broad beans or small marbles. There is little to go wrong with the system except leakage so make sure that all of your joints are good. Turn on the gas slowly and wait until it comes through with a match beside the burner. Then simply adjust the flow until the flame looks about right. If you are touching the inside of the casing with the flame, the gas flow is too high!
I can't offer more than that really. When the carbide is exhausted, you will have only calcium oxide powder residue which stinks to high heaven! Simply wash it out and start again.
My view now is that carbide lights are fun to play with but if you plan to go out in the dark, make some sort of electric conversion or temporary lighting installation as the most likely accident we will have is that someone runs into us because they haven't seen us.
Try it once for the experience. Good luck!
Steve