We do not let a birth happen without looking ahead on behalf of the infant, who cannot help itself. Similarly, all of us are going to die, so we should make preparations for that too, but in this case we can help ourselves. The best preparation for a good death is a life well lived. So the sooner we start preparing to die well, the better we will live in the meanwhile. We can do various things that not only are good for our present life but will also help when death finally comes.
Many books are available on events before, during, and after the death experience.
Some are based on commonsense observations of the dying process. Still others are the records of ancient teachings about death and the afterworld, preserved in that Wisdom Tradition which in its modern form is called Theosophy. Study some of these books to learn what they say the event will be like. There is no question that death is a major change in the conditions of our existence, just as birth was. One way to prepare for them is through meditation, by which you make contact with altered states of consciousness that are in some ways like those you will experience after death.