Hey Sally, I'm really new to vaping myself (~3 weeks). Actually, I wasn't even initially planning on quitting (nor had a desire to quit smoking), but after an associate of mine piqued my interest with his e-go, I started doing some research (it helps that I'm kinda into tech/DIY things) and got myself a nice setup that's gotten me from ~1-1.5 packs per day worth of smokes to ...maybe 1-2 rolled cigarettes/day? Maybe? (And honestly, that's just because I enjoy the taste of rolled tobacco and, again, didn't start with the intention of quitting. That said, I can see myself completely quitting with ease. I kinda lucked into it, I guess)
If I were you and *wanted* to quit, I'd get myself a kit that'll help you enjoy the experience (vs something you have to power through). Perhaps, as previous posters suggested, something that you won't outgrow like in a month. For a battery, the Eleaf IStick seems to be a popular, budget-friendly choice. Personally, I went for the slightly pricier MVP 20W ($42 w/ shipping. I heard that the MVPs were more durable and reliable. [I'm kind of a klutz, at times]). I went with the variable voltage/wattage device since it allows for a wider range/more customization w/r/t tanks and e-liquids.
For tanks, the Aspire Nautilus Mini seems to be a popular choice for ease-of-use and flavor. (I never got an Aspire Nautilus Mini (rather, I have one that I'm planning on returning since I went with a "more difficult" tank [a Lemo Drop] where you have to rebuild coils and the like instead of buying easy-to-use coil heads]), but did go with Aspire K1s. They probably mute the flavor more so than the Nautilus Mini, but are more pocket- and on-the-go-friendly. (This choice was augmented by the dripper/rebuildable tanks I went with). The K1s runs through roughly 2-3 mL/day with heavy use. I'd estimate the equivalent on the Nautilus Mini's 3-5 mL/day with heavy use? A guess.)
For e-liquids, my first e-liquid purchase was from Mt. Baker Vapor. They have good flavors and are very, very friendly on the wallet. (15 mL of botique e-liquids for roughly $4-5/30 mL for roughly $7-8)
It might seem a bit pricey at the get-go for something you might or might not be into, but another way to see it is that you'll be spending the the cash that you would spend on a few packs at the store on a roughly equivalent amount in gear/e-liquid. And if you ultimately do end up dropping the e-cig thing, you could potentially sell your gear on CL or something. Another drawback is that the whole e-cig/vaping thing does require more research than going out and buying tobacco/cigarettes (although, if you get into it, it can be a plus?)
Anyhow, I hope this didn't ramble too much or seem too presumptuous. G'luck!