Anyone used to me on youtube will know that I post tutorials each time I solve a 3d Problem. 3D lighting in Octane is where I am at atm and for anyone learning this fantastic renderer I offer my tutorials for perusal / comment.
First up the car park scene (Night scene, mainly emitter lit, no layering reasonably fast render time)
Covers Exporting a scene from Carrara to DAZ then rendering in Octane.
PART 1 Exporting and lighting.