I'm not familiar with that kit, so I googled. Is this it
Inferno Starter Kit?
If so, what you got includes a cartomizer tank, and some cartomizers. You will want to first plug in the charger and put one battery on to be charging. They probably come partially charged, so you can try the other one out right away.
You will then need to fill up a cartomizer (the small metal tube looking thing). There are several ways to fill a cartomizer, but the important thing is that you want it to be pretty full, slushy on top. You can put some liquid in and let it soak in, then add more. Or you can search for the condom fill method (use the little cartomizer cover to squish
juice up through the cartomizer). Once it is good and full, blow it out into a tissue to clear the center channel.
After getting the cartomizer filled, you will need to put it in the tank. It looks like it will just slide into the tank. Put one of the tank caps on (top or bottom, not sure if it matters which first), then fill up the tank with liquid. Put the other tank cap on and you are ready to screw the cartomizer tank on the battery, but don't overtighten it. I'm assuming those cartomizers have a hole cut into them already, so as you vape, the liquid will feed into the cartomizer from the tank.
After you have it all assembled, press the button on the ecig as you inhale. You should get vapor. Many people vape a little differently than they smoke. You can try different things and see what you like. For me, I used to inhale directly into my lungs, but with
vaping I inhale into my mouth and let it sit for a sec, then into my lungs, but not as deeply as when I smoked. Hard to describe, but you'll figure it out. You might cough some at first until you get the hang of it.
If it tastes burnt and/or you don't get much vapor, you possibly didn't get the cartomizer filled enough. It has coils running through the filler that vaporize the liquid. If the coils don't stay wet, the filler will burn and taste horrible.
I don't know if that helps any. You can also try looking for YouTube videos for that specifc brand, or just "how to use a carto tank".
I'd recommend buying and trying a few other topper devices (the things that hold and deliver the liquid). Try a few clearomizers (bottom and top coil). I don't know if the inferno thing is 510 threaded, but if it is you will have many options for juice delivery toppers.
Ask more questions now and as you go, and someone will be delighted to help you!