Sometimes, digital comic platforms offer it. Check out popular ones like Comixology or Kindle Comics. Libraries might also have it in their collection.
Yes. The Avatar comics provide more depth and exploration of the world and characters. They've been well-received by fans who want to immerse themselves further in the Avatar world.
No, Avatar is not a comic book. It originated as a highly successful animated film and later expanded into various related media, but not in the form of a traditional comic book.
I'm not entirely sure about the exact main plot. But it probably revolves around the Avatar's journey in search of something. It could be related to finding a lost power, a missing person, or a solution to a big problem in the Avatar world.