I would love to, but I am a new myself. I have experience with kangers only. But the basic principle is this;
coils/wick get a buildup of gunk, that insulate the coil (in relation to heat)
Depending on the wick medium, silica is stock, and cotton is diy. ( there are others, ss, and I believe ceramic). People dry burn silica wick at the same time as the coil, because it doesn't burn, to dry burn a cotton wicked setup the cotton must be removed before dry burning, and replaced. IMO I dry burned a stock silica wick, and it was nasty. I use cotton.
So dry burning is slowly heating up the coil, by pulsing it to a red hot state (to avoid coil failure and gromet/o-ring failure). You want the
tank off to do this (which is where the dry comes from)
You start at a low volt/watt setting, and increase as needed. You will notice a visual difference in the coil once it has been dry burned properly, it should look new.
And I guess, don't forget to rinse the head, and let it dry first (some people dry burn to dry burn, if that makes
sense 
)
There should be some good threads here with more experienced members on this, you can google it.
You can always just replace the entire Atty, many people do.