Anna Karenina: Wherever the hell I am in this book

Finally! Anna Karenina has arrived! And no, I'm not being sarcastic. In the book, she's finally arrived as a character. Apparently she's a friend of Vronsky's mother. It's actually weird how everyone knows each other... I mean, the story starts with Stiva, who's married to Dolly. He's friends with Levin, who loves Dolly's sister, Kitty. However, he has a rival for Kitty's heart: Vronsky. And of course, Vronsky's mother just happens to be friends with Anna, Stiva's sister. Whoever doesn't find this weird is just weird themselves. But anyways, after he meets Anna, someone dies--a worker is run over by a train. Of course, she finds this as a bad omen, just as the reader should: it seems to be a foreshadow for the rest of the book considering the book is suppose to be about adultery. And yes, I did look up the basic theme of the book before I started reading it.