The pit remover is fairly simple to use, but also intuitive. Some knives come with a hole, so you simply cut the avocado in half and push the pit out. Some others come with a round scoop or a ring. These parts go around the pit and take it out.
No matter what kind of pit remover you get, a few tries will turn you into an expert. There is one thing to remember – try to do it fast to avoid damaging or mashing the flesh. A quick swipe is more than enough to get the job done.