Yeah, pretty sure it follows it pretty well.
Yea..
Only the Eren vs. Annie fight within the walls was slightly altered, I suggest you read the manga form there on.
I know one change is that when Mikasa is swearing revenge against Levi for beating up Eren, Levi in the manga doesn't hear her, but does in the anime. I was very impressed with the anime overall and am excited for season 2.
There's quite the few tho, in the anime Eren is shown still not in control as a Titan and in the manga he is and is already working and understanding Armin, Hanji and company. Then when Levi in the anime saves Eren from fusing with the Titan, he doesn't in the manga, he's still hurt and Armin was the one who did I i think or random soldier.
And the ending we all know how they changed it