Newbie to dripping and was just wondering how long coils last before needing to replace and why people mention not to use a fresh battery
How long your coil lasts will depend on how much you use it and how often you change juices in it etc. I can use the same coil constantly with the same juice in it for about a week before I change it. To be honest, it could probably last longer than that.
Also a freshly charged battery is more likely to pop your coil. It's best to leave it at least a couple of hours.
My atomic has had the same coil in it for about three weeks - works just as well today as when I first fired it up and will for the same time again (if not more). Cheap juices will gunk up when heated and need changing regularly but that's the only real problem coils can face beyond hot legs.
Kanthal is metal and silica is glass - they both last ages if treated right. If you use cotton then you can wrap a microcoil and just pull out and replace the cotton every now and then and not change the coil.
The battery thing... If you're using a mech then the full power of the battery passes through whatever atty you have attached. So a freshly charged batter will put more power through than a lesser charged one, it's a taste thing more than anything - high power will give a much hotter vape. That's not an issue with regulated devices however.
As for a micro coil how many raps of .25 wire would u suggest and cotton what sort just the same stuff my misses does her face with cotton ball/pads ?
Depends on the resistance you want. Have a search for microcoils on YouTube, will be much better than my typing
Absolutely not the same as your OH uses... Often that'll have been bleached and you don't want to inhale chlorine vapour! Organic unbleached cotton ideally, or you can boil the cotton a few times to get out impurities. Again, YouTube is your friend for cotton wicks.