Reddit reviews Sword Art Online: Aincrad - manga (Sword Art Online Manga (1))

The original work, in this case the Light Novel was adapted to manga.

Volume 1 for the Light Novel

Volume 1 for the Manga

I am not 100% sure on this but i think it is the manga

EDIT: Yep its the manga here's a link to amazon

Well I did manage to find this on amazon

this thingy

Is this the Aincrad arc manga?

The first manga on the shelf here is the Aincrad arc. It basically covers the first Light Novel, but includes the Yui story. Doesn't have the rest of the short stories from volume 2 of the Light Novels. Here's the link to amazon for the volume. https://www.amazon.com/Sword-Art-Online-Aincrad-manga/dp/0316371238/ref=sr_1_1?ie=UTF8&qid=1543081114&sr=8-1&keywords=Aincrad+manga