Preserve the author-published reading order through the five currently named core Books, with Six Scorched Roses and Slaying the Vampire Conqueror optional, while leaving the confirmed final Book 6 position unmodelled until a stable Book identity exists.
The author explicitly marks this standalone novella optional and places it after Book 1.
The author explicitly marks this standalone novel optional and places it after Book 2 in the current reading order.
Core Book 3 and first volume of the Shadowborn Duet.
Short answers, with sources.
Start with The Serpent and the Wings of Night. Follow the five currently named core books in order. Six Scorched Roses and Slaying the Vampire Conqueror are optional companion reads in the author's suggested positions; a sixth and final core Book 6 is confirmed but still TBA.
Sources: Carissa Broadbent — Crowns of Nyaxia, Carissa Broadbent — Reading Orders / Crowns of Nyaxia, Carissa Broadbent — What’s Next?
No. Carissa Broadbent explicitly marks Six Scorched Roses as optional and places it after Book 1 in her current Crowns of Nyaxia reading order.
Sources: Carissa Broadbent — Reading Orders / Crowns of Nyaxia
No. Carissa Broadbent explicitly marks Slaying the Vampire Conqueror as optional and places it after Book 2 in the preferred current order.
Sources: Carissa Broadbent — Reading Orders / Crowns of Nyaxia
No. Carissa Broadbent's current roadmap identifies a sixth and final core Book 6, but its stable title is still TBA. Shelf of Worlds therefore keeps the current path partial and does not invent a placeholder Book.
Sources: Carissa Broadbent — Crowns of Nyaxia, Carissa Broadbent — What’s Next?
These sources support the reading order and important details about the books and their editions.