Sword Art Online is still on the 4th episode but since I fully read the light novel I thought I should make a comment of what has already been shown. There are spoilers in this review so please wait for the full anime review of this when the first season is finished if you do not want to read spoilers.
After reading the novels I had great expectations of this anime. Despite this, watching the first episode made me think that it they are trying to rush into the climax of the novel and skipping the details.