Recs if you like Ashes of the Academy...

Chronological order for Avatar novels and comics. Hunker down in the secret tunnel and let the path illuminate your pages. I've listed the Omnibus Editions after Part 3 of each set. The Promise is the only one listed as just an Omnibus.

All the books and comics from the world of Avatar The Last Airbender/Legend of Korra

This is all the main Avatar: The Last Airbender comics that have come out, The Lost Adventures, Team Avatar Tales, and Patterns in Time, are all anthologies of miscellaneous comics and none of them are necessary to read the rest of the "main comics", bottom comic is the first and top is the newest (you can switch the added on filter to switch it but this seems more sustainable for when new stuff comes out)