I'm want to worship Hades but don't know how.

[Nyktipolos]

Persephone, on the other hand, while belonging both to the world of the dead and the world of living, seems to be more able to relate and comfort our sorrows.

 
That's quite possible, even though I've never really "seen" that face of her. However: In one source (Empedocles) it's actually said that it's taboo to speak her name as the Queen of the Dead. Epithets or other round-about ways of referring to her in that role are normally used. Other sources (Homer I think?) list her as being the "real" ruler of the dead of Haides, and being a "terrible" goddess (although this isn't used as an "evil" signifier, rather just a description of her power). My point being that it seems when invoking or calling to Persephone as the Queen of the Dead/Underworld, she doesn't seem to be been viewed or referred to as being placable or kind.

Not that this is the totality of her being, and I'm not trying to imply that. Just suggesting it for one to keep in mind. Contacting an Iron Queen will get you a much different response than that of a Spring Maiden.

[R03e]

I don't think that actually bothered any of them.  Things like curse tablets were basically petitions to the gods to harm specific people and can be found throughout the ancient world.

Absent

 
I never heard of them previously to this but I never plan to use them anyways.