Welcome to ECF!! Good luck on taking a healthier way for nicotine.
When it comes to e-juice, There are many sites and the vendors at the very bottom of the forums list have been reviewed and approved by ECF. Its a place to start. Speaking of e-juice, I prefer the "sampler packs" that some on-line vendors have. Its a way of trying more flavors for less. For example; I get a particular flavor, say peach tobacco, from one vendor and get the same flavor from others and then I can determine which one is best for me.
The eLeaf iStick 20w has a power regulation problem. It was the first model. They are coming out with a version 2, so that might be a good next step. Speaking of Mods, do you have a spare? What happens if your iStick breaks? It is recommended to always have spares. No one wants to feel that they need a cigarette. If you get another Mod, your iStick 20w will be your spare. I keep my spare in the car, I am pretty much always near that.
Congratulations on the switch!! My health is so much better and that includes my teeth. We don't stink anymore, we can taste food better, and we can smell things easier. Takes a little bit of time, but it will happen if you continue to not use cigarettes.
Keep going!!