Baditude covered it, that is amazing advice.
A good beginner cloudchaser setup with flavor on a dual coil deck rda would be 26gauge 7 wraps around 2.5mm rod. Airflow is key, you want plenty of it to take deep lungfuls, but that all depends on the atty, you may not want it open all the way. Start at low wattage, probly 35, and start working it up, more air and harder hits if the vape gets too warm for you, until you get a good cloud and flavor but it's not too hot for you. Take your time doing this so you're not just chain vaping like crazy.
Once you get the hang of single wire coils, you can easily twist 2 wires together and make twisted coils, which basically doubles the surface area of the coil and lowers resistance, vaporizes more liquid all at once. Look up twisting wire with a coffee cup on youtube haha. Ghetto but effective no tools resistance wire twisting, does not take long.
A good beginner twisted wire dual coil setup on an rda would be 2 26g wires twisted pretty tight wrapped around a 2 to 2.5mm rod, 7 wraps. That will kick some fog and have good flavor.
I like to do mixed twisted wire, right now I'm using 7 wrap dual coils 2mm id, a 26g round ka1, 28g ka1, and a flat wire .1x.8?, in an Aromamizer Plus rdta. Came out to .25 ohms and I run it at 78 watts (4.44 volts) all day long, 3 second pulls, some of the biggest clouds I've ever laid down and flavor is great. Wicked with rayon for the first time yesterday, thanks
@Zaryk .
That's just what I like, I don't consider myself a real cloudchaser, I need big flavor too, but I love a deep warm lungful of tasty vape, mm mm!