And use steam engine to get an idea of how many wraps you’ll need to hit a desired resistance. you can input wire type, inner diameter, leg length etc. It means that the first one or two you build aren’t a guess, that’s all.
If you haven’t got a regulated mod, you should also add an ohm meter to your kit list. Last thing you want is a short, particularly on a mech or unregulated mod.
You’ll get the gist of it quite quickly.
One last thing I’d add is that you want to get a coil jig (if you buy one) with long enough mandrels to go right across the deck. I stupidly bought the cheapest UD one and the mandrel isn’t long enough to cross the deck which is annoying when some atties now come with slots to assist lining everything up.