Welcome to the world of vaping. Smokeless Image is an excellent company to start with. They'll help you get off of the cigarettes. SI's stuff is all compatible with one another so that makes it easy to try different devices. Not everyone likes the same thing, so trying a variety of different things will help you to eventually find what works best for you.
In case you weren't aware, Smokeless Image has their own forum here:
Smokeless Image You can post a pic of you using your Volt and get a free battery there. A lot of helpful people there who can help you with their experience with the same equipment that you will have. The company representative, Imagine, stops by often to answer questions, too.
Most of us started out with the cig-alike (Volts) batteries. To achieve longer battery time and larger juice carriers, many move on to the X2 batteries (ego sized) to gain anywhere from 6-13 hours of battery time, and devices like the clearomizers, T-3, etc for more juice carrying capacity.
Most important thing for you is to get a relatively high nicotine strength in your juices; and find a juice flavor or two that you like enough to order more of. It won't be considered a crime if you continue to have a cigarette or two for the first few days, over a few days they will start to taste bad and you won't likely want any more.
Drink plenty of water, vaping dehydrates you. It's not necessary to inhale into the lungs, the nicotine in vapor is mostly absorbed in the throat and mouth, so slow inhales into the mouth and slow exhales thru the nose and mouth. Much of the flavor of e-juice will be "tasted" thru your nose, if you know what I mean, so make sure to exhale some vapor thru it.
Your vaping is dependent upon a supply of juice and charged batteries, so have plenty of juice on hand and have backup batteries charged and ready. The bigger the battery, generally, the better the vape, so sooner or later you'll want to expand to the X2 batteries.