By all means, RayN, take your time. I vaped intermittently years ago, and everything changed when I came back around to quit! The changes can be dizzying.
You won't blow your face off with an RTA or RDA, not on a regulated mod, these days. It's far more likely if your build isn't workable, it just won't vape. However, yes, there is a fair amount to be learned if you want to start building. The Rebuildable atomizer forum will be your friend there, if you do decide you want to build in the future. It's not exactly the easiest thing of all time (at least for me) but some folks take to it like a duck to water, and if you decide you want to rebuild, you will have plenty of folks willing to hold your hand along the way. LOL, my first build was so complicated and difficult it took me six hours, the husband, and many calls for aid in the rebuildables forum, but it eventually vaped. LOL, I would up calling it the "ECF collaborative coil" because I got so many cliffs notes from ECF members along the way.
So if it interests you, don't hesitate to start doing your "research" as it were. I'm glad you were able to find the vaping parts you need now though, and good luck.
Anna