Welcome to the forum...
I agree with Tug's suggestion, up to a point... since you should start out with at least two batteries and two tanks (along with a few spare coils), going the Spinner/Nautilus route can get pricey I would also suggest you look at the Kanger starter kits (EVOD or EMOW). Either kit includes two batteries (smaller than a Spinner, so you have to charge them more often), but you also get two tanks and spare coils all in one package, for about what you'll pay for one Spinner and one Nautilus-mini.
Given that you were a half-pack smoker, I would suggest you start out with 18mg juices... the higher nicotine content will help you get past the cravings while your body detoxes from the 4000+ chemicals polluting your system from smoking analogs
Oh, and vaping dries you out... so drink LOTS of water... not coffee/tea/soda... plain old WATER!