Keep your atty wet, and you will hopefully never have to suffer the taste oh-so-reminiscent of lighting the wrong end of an analog.
However, when I first started vaping, I burned my first cartridge dry a couple of times, but due to the condition of my olfactory senses, I didn't notice the lingering burnt smell until I switched to a new one weeks later! When I tried to go back to the original, then I noticed the taste and the darkened color of the polyfill.
Unless you have a clear tank system, this will be a "learn as you go" experience.
Good luck and happy vaping!