Variable voltage actually makes life extremely simple for the beginner. You just plop on a filled cartomizer, clearomizer, atomizer or tank and dial in what tastes best. It's no more complicated than that. There is no need to concern yourself about voltage, wattage and resistance (ohms). You can study those topics if and when you decide that is something that interests you. This particular video review, THE EGO TWIST IS A GAME CHANGER, is for a variable voltage Twist but other models work basically the same.
However, by all means, do get comfortable with what you already have and enjoy the juices you ordered. Just know that there is a more satisfying vaping experience available that is easy for the beginner if you find the cig-alike falls short.
A drip tip is not a juice delivery device. You can replace the white plastic cap on the end of your cartomizer with a drip tip. Use an eyeglass screwdriver in the center hole to pop out the white cap. A drip tip will keep your lips away from the cartomizer if it gets too warm and will also keep condensed juice off your lips. I found that this juice condensation caused sores on my mouth so I always use drip tips. You also use drip tips with atomizers and tanks.
Glass bottles are chemically inert whereas plastic bottles aren't. I prefer glass bottles but very few juice sellers use them.
Search on YouTube for reviews of any particular device that interests you. That way you can see what the device looks like and how it is used.
