They transmit their messages and support in the form of dreams. This is also common. In dreams, we do venture into the realms beyond, and we interact with those on the other side, but we remember little of it when we wake up. After death, unless you are a medium, the way to communicate with the dead is through dreams. We all do this, but few are aware of it.
Death is a joyful experience Death is the most misunderstood experience of all.
The modern world, which refuses to believe in anything outside its limits, has taught us that death is fearful and horrible. We are told that we live one short, painful life and then it is nothingness. So death becomes the ultimate fear when it is actually natural, joyous and peaceful. There are many books on near death experiences in the market. If you want to know how beautiful death can be, read about a few of them.