I would usually suggest ordering with your PV order, but My Freedom Smokes does not carry any e-liquid. I really like E-Smokey Treats (high recommendation for watermelon and coffee), and some Pure Smoker stuff (their menthol is great), but my recent order from E-Smokey Treats Coffee wasn't as good as the first one. PureSmoker is a super popular site, so many times they are out of stock on liquid. I would first find out what baseline flavors you like to vape, sweet, mint, tobacco...ect. Then branch out from there. The flavor usually prepackaged in sets is usually marboro or "regular tobacco" (I've seen it packaged as both "regular" or "tobacco"). After you figure out what flavors you want to try, determine your nicotine level. It is possible to get more nicotine in vaping rather than in analogs, simply because a PV gives until the cart is dry or the battery is dead. However in most cases, drag per drag, an analog has more nicotine (i believe). If you do plan on ordering from Absolutely, they also carry e-liquid as well as "blank carts" (which do not have e-liquid, and sell for a lower cost). Be aware that personal tastes vary, so what i like you may hate.
If you don't have an idea of what kind of liquid you want to order, try getting some sample packs. Retailers like PureSmoker, Johnson's Creek (JC), and a few others have small bottles (usually ~5mls) of about 8-10 flavors.