Star Wars: How do the Jedi become Force ghosts after death?

Throughout the Star Wars saga, there have been various Jedi who seemingly live on after death, but how is it possible, and what kind of training does it ta

If Jedi Masters can become a Force Ghost, can Sith Lords also become a Force Ghost? - Quora

I love how The Force Ghosts seem to get more solid as time goes on after their death. : r/StarWars

Force ghost, Wookieepedia

Star Wars Is Finally Revealing How Anakin Became A Force Ghost - IMDb

If he hadn't been trained, how was Anakin Skywalker able to become a force ghost? - Quora

Changes in Star Wars re-releases - Wikipedia

Can Sith Become Force Ghosts (Canon) - Star Wars Explained

Star Wars: When Force Ghosts Don't Make Sense - Bell of Lost Souls

star wars - Why hasn't Anakin Skywalker's Force Ghost advised Kylo Ren? - Science Fiction & Fantasy Stack Exchange