I just use pdfs of the Light Novel provided at Baka-Tsuki. While it would be nice to have a physical copy, these are great for quick reference, and the translations are far from amateur, so it's still delightful to read.
Heck, I'd say it's better than the anime in a lot of ways. While fighting can't be portrayed this way, Kirito's more likable in the Light Novel, and getting into his head makes understanding him, as well as Aincrad (and the other MMO worlds) far more of an experience.
Plus Alfheim isn't rushed like it is in the anime.