I'm sorry to make your head bleed, LOL.
These are the values you need (and ALL you need) to input into steam engine.
WHAT kind and gauge of wire (you can figure this out by looking at your spool of wire, it's very simple). It's a drop down menu, so you just need to find your wire.
I'm imagining you have a tool or a screwdriver or whatever to wrap your coils, right? If you have a coil jig, the diameter will be printed ON it, if it's a screwdriver, just measure the inner diameter of the coil (basically, the width of the screwdriver that you are wrapping your coil around, so you can just measure that with a ruler that is in mm or a tape measure or whatever. I micro(contact) coil means the coils will be touching each other. You will have a "leg" on each side that you will attach to the build deck. Measure the build deck to the screws, and "estimate" about how much space your coil will take up (a few mm probably) then subtract that from the length to the posts. This will be the length of your coil LEGS.
IF you input all that in, steam engine will tell you how many times you need to wrap your coil around whatever you are using.
If you are using dual coils and want to, then you just need to DOUBLE the resistance you are going for, since two coils together (oddly) is going to be half the resistance, not double, which is what I would think would be happening, but no, it does not do that.
So, with one coil, it's just very simple. With two, you can decide on your needed resistance and then halve it. I think single coils are easier to start with, as you are using LESS wire mass and will need less watts to heat it up. This is the reason why MORE watts are usually required for lower resistance coils, they need more "watts" to heat them up and produce vapor, due to more coil mass.....
Even if you are going to be buying coils and installing them, knowing this stuff is helpful and will help you understand why you are needing more wattage, versus less wattage. Why not bring your deck to the vape shop and see if there is someone there who can help you with a SINGLE coil? (If you have one near you). If not, you can still purchase higher resistance coils, most likely. It's funny, this stuff is WAAAYYYY easier for me than actual coil installation and wicking, it's really not brain hurt-y stuff (for me). I might rather have the opposite problem, I'm pretty good at getting to my target coil resistance, but I suck at installation and wicking, LOL.
Anna