Heya Jenn!
Welcome to the world of vaping

I can totally relate because, as I did smoke analogs in the past I barely smoked many at all. When I first started vaping I fell in love, but quickly found out that you can get quite a head rush (and possibly gain some tolerance) when vaping due to the slightly confusing levels of nicotine.
First is first, nobody will tell you that vaping is like smoking or vice versa. It just isn't. Disposables and store-bought cartridges don't "equal 2 packs of cigarettes."
With that in mind there's a few things you should consider and weigh what you want in your vaping experience. Generally speaking, higher nicotine content equals more throat hit. Another thing I've heard and definitely have to agree with, at least a little bit, the higher your nicotine content the more your flavor gets muddled. So you can definitely lower your levels to achieve a cleaner, tastier vape.
0mg Nicotine - Pure flavor
4-6mg Nicotine - Great flavor, very mild TH
8-12mg Nicotine - Perfect middle ground, I think most people enjoy between 8-12
18-24+mg Nicotine - Heavy TH
All up to your own personal preference. You said you didn't smoke much before so, with that in mind, buy some liquid from a quality vendor and start at a good middle ground... around 8mg Nicotine or 0.8%. If that doesn't work out for you, lower or increase the dosage accordingly.
Another thing to keep in mind is how MUCH you want to vape. If you love to chain vape all day you might prefer a Low/Very Low or even 0mg Nicotine Content. If you only vape after meals, a 12-18mg Nicotine juice might work better for you. I personally love it right at 8mg. You get the best of both worlds and don't need to worry about mega dosing on stimulants.
I'm far from the most experienced but that's what I got! Good luck
P.S. Some quality juice vendors I highly recommend:
Virgin Vapor | Electronic Cigarette Organic e-Liquid | Electronic Cigarettes
Best E Cigarette | Buy Electronic Cigarettes | E Cig Juice - MT Baker Vapor