Welcome to the world of vaping! Let me second the recomendation to check out the forum ECF previosuly posted. It is a large forum and can be overwhelming at first. Don't be intimidated, once you start vaping it'll make sense quickly. Trust me. I never thought I'd ever "get it".
I started with a convience store cigalike. What a waste of money. Then a vape store's starter kit, double the money I wasted. Vape stores vary dramatically in quality and variety, so your store may be much better. But an Ego, Spinner, or Twist is where most people start. That is the minimum needed to be effective. The one above, MVP2 is really good too and will cost less than $70 with eliquid.
Taste is very important and subjective. It's the flavors that make vaping easy because I have found I prefer the various flavors over the taste of tobacco much more. Cigarettes taste nasty anymore. That's what makes all this goofy hoopla about "flavors for kids" so ridiculous. Just walk down the alcohol aisle and you'll see the same flavors. Adults like flavors too. I would reccommend preparing to spend money on a variety of samplers from a variety of eliquid manufacturers. You'll find a lot of reviews on the ECF website.
I'm not sure where you are located, but check to see if there's a local vape meet you can attend. It's worth the effort because you'll meet a number of vapers, can check out their equipment, test a wide variety of flavors and find your sweet spot as far as what's comfortable for you. It's helpful to have the support when you have questions too. Many groups will have suggestions / discounts with reputable local suppliers also. Most vape meets will have a Facebook page to stay in contact between meets.
You will start feeling healthier within the first week. That's what fuels vaping. Nicorette did nothing for me, patches didn't either and I almost went crazy on Chantix (that should be taken off the market).
There's a lot of diabetics vaping. I haven't heard of any increased blood sugar problems and I know several people with diabetes. Ask about it on ECF.
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