What do you already have? An eGo battery could get you started, add to it either a 306 atty with a 306 drip tip, or a 510 atty and tip. I personally use bridgeless atomizers, to me they have the least horrible taste if you get a dry hit and I feel as if I do not need to clean between flavors. Put your new atty on the battery, add your tip, drip about 4 drops and let is sit a minute, drop 2 - 3 more and hit it a few time without inhaling. Top it off with 2 or 3 and go to town...you will quickly learn when you will need another 2 or 3 drops more. If you like the dripping, invest in a drip shield and it will make your experience alot more cleaner and enjoyable. When I want to change flavors, I just vape it down to about when I feel another few drops is needed and drip in my next flavor, after one or two times I can't taste the old flavor anymore.
To clean, I just run my kitchen sink on full hot and hold my attys under the stream. After a few minutes I blow through the threaded end into a towel, give em a brief dry burn in needed and start from step one as if it were new.
*this is just my meager experience, YMMV
Ron -