Grats!! You have found a great source of information and support here. All the possibilities on devices available to the new vapor can be overwhelming, but spend some time reading and learning here and you will soon be as knowlegeable as any of us.
May I offer some general tips to a new vapor?
It's ok to occassionally use the analogs while you are trying to quit with an e-cig, if that is truly your goal. It won't be long before you'll look at a real cigarette with disgust after vaping. Don't be afraid to experiment with new juice flavors, because once you find one that you really like, quitting the analogs will be much easier.
You won't be able to find a juice that tastes like your old cigarette, so don't bother trying. It's actually more fun to find favorite flavors that can only be enjoyed by vaping.
Startup expenses can be rather expensive for the first few months as you try out devices and juices. Just remember how much you spent on the analogs, and realize you are doing something positive for your health. I started with one of the larger Smokeless Image Volt kits, and highly recommend this company to start out vaping with.
Drink plenty of water, vaping can dehydrate you. Juice flavors may taste weak for the first month or so until your damaged taste buds heal. Coughing while vaping will go away - your body is adjusting to a new way to absorb nicotine.
Learn the best way to vape. Instead of inhaling directly into your lungs, suck into your mouth and throat like a straw and then inhale. Nicotine in vapor is absorbed mostly in the mouth and lungs. Then exhale slowly through you mouth AND NOSE - our sense of taste is greatly affected by our sense of smell, too.
You can never have enough charged batteries. Hense the vapor's motto, "Have backups for your backups." I started out with four Volt 78mm batteries. One time after not having a cigarette for a couple of weeks, I let my batteries run out of charges. I had a nicotine fit while they slowly charged and ended up buying a fresh pack of cigs. Not the end of the world, but I felt bad. I only ended up smoking 2 stinkies from that pack and they actually tasted terrible, but it made me realize that no batteries means no vapings.
At first my e-cig just had to look like a real cigarette. Fact is, the more an e-cig looks like a real cigarette, the less likely it will perform well. I soon got tired of changing batteries every 3-4 hours, and moved on to the Volt X2. These are great with the clearomizers. You can nearly get thru an entire day with the combo. And the larger size didn't bother me at all at that point. I even used it in public, and no one really paid any attention.
The Volt CE3's are a great way to try new flavors without wasting an entire carto. I get trial sizes of around 3-5ml or sample packs from different vendors. If you don't like a flavor, its easy to remove the juice, rinse the inner CE3 with water, and then add another flavor to try.
Congrats again and good luck vaping.