Sorry for the late reply... Ive been kinda stoned.
Auto flowers need less care because of the ruderalis genes they contain, they are naturally more hardy to extreme conditions. I'm not sure why they don't take very well to high doses of nute but for some reason they are easy to overfertilize. Most strains will receive all of the nutes they need from a blend of good topsoil and vermiculite, remember that since they only grow for two to three months, by the time nutrients in the soil have been depleted, its time to flush them out and harvest. They do have a short veg period, it only lasts for about fifteen days, and then they will show sex and start to flower. The part about only needing one light is because they will grow and flower under the same photo period, meaning that you can set your timer to 18/6 and leave it there, the plants will be ready when they are ready and that makes it much easier to have a perpetual crop. F1 hybrids are easier and faster to make because the lifecycle of autos is so short, one can almost immediately see changes in the dominant traits of your seedlines after selective breeding, once you have identified what parent strains produce the most vigorous growth and best buzz, an almost unlimited amount of prime F1 seeds are yours to sow. With a few generations of selection, true breeding characteristics will be established and you can now give it a name and you have created a new strain, all your very own.