Please don't ask about my first attempt, trust me, you don't wanna know.
Coils were still kind of basic coils when I first started building them, and it was a learn as you go type of deal.
I still remember the first time I saw a RBA, and thinking "now how stupid is that!" My little 510 atty would vape circles around it.
It took a while for them to catch on, and then it took a while for guys to figure out how to get them to perform. So learning how to use one was a process, not an event.
New and more advanced RBA's, and more ways to build good coils these days than you can count has shortened the learning curve a lot. But, it in some ways has made it more confusing because the coil that works best in one RBA might be your worse nightmare in another.
In time I settled in with one type of build, and I probably only have to replace it every three months or so.