Just don't worry about the dust . it's a car, it needs to be driven here and there, out and about just as much as can be ........... and once the engine oil and all other fluids have been checked over as being all ok then she probably won't need looking at again until the next service interval, maybe annually and with the MOT
Just sit in her, drive and ENJOY ..... Oh and put fuel in her sadly, occasionally 😇
Malc