I consider myself a very safe person which is why I have yet to touch anything in the RV when it comes to the LP and the tank. I have looked at the tank and the knobs and such but I am not exactly sure what to do. I have watched the original beginning video that came with the RV and it doesn't tell me much. It tells me how to turn on the stove top burners but not much else. The tank is little under 3/4 full. There is a knob (unmarked) on the tank. Do I need to turn that valve to "open" the tank and allow the LP into the lines before I try to turn on the stove top burners?