Reddit reviews Avatar: The Last Airbender: Legacy (Insight Legends)

Did it look like this?

https://www.amazon.com/gp/aw/d/1608874478/ref=pd_aw_sim_14_of_5?ie=UTF8&psc=1&refRID=4CZSK21M2BB30QYFP6S4

Well they're all on amazon, I'd recommend getting the library editions to save a few bucks if you can. There are comics that pick up from the end of ATLA and ones that pick up after LoK. They're all great so far and I'm super glad I got them. Rise of Kyoshi is also my new favorite novel, so if you liked Kyoshi at all, I highly recommend picking that up. Should be about $15 on amazon too. Lastly there's also Legacy which is meant to be like the book Aang hands down to Tenzin, and Legacy of the Fire Nation from Iroh to Zuko.

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Avatar Comics in Order

The Promise, The Search, The Rift, Smoke and Shadow, North and South, Imbalance (current)

There's also The Lost Adventures which is an anthology of a bunch of little comics, all of which are canon but the last two.

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Korra Comics in Order

Turf Wars, Ruins of the Empire (current)

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There are also a few free short comics on Dark Horse's website, just need to make an account. I'll link those too for ya:

Rebound

Shells

Sisters

Friends for Life

Lost Pets

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Hope that helps in the future! At the very least you can read the free ones right now, and maybe save the rest for a special treat :)