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human
[Star Wars] How did Anakin know how to become a Force ghost?

Qui-Gon was researchi and found out how to become one, so he taught Yoda, who taught Obi-Wan. In order to become a Force ghost, Yoda had to do numerous trials involving light side stuff.

Anakin, who we never see being taught this, becomes a Force ghost as soon as he dies. He never did any trials (in fact, he was part of the Dark Side) or anything of the sort, so how did he know how to become a Force ghost and how did he end up becoming one?
gpt
Yoda learned how by confronting his dark side and rejecting it. Anakin did the same, though it took him longer than expected. Also there's the fact that he was conceived by the force, so he's the exception to everything.