Jasper and Rosalie tell Bella about their past.
Jasper & Rosalie.
Jacob Black
jacob
During lunch, Jessica told her the Cullens' names.
He told her the Quileutte legends which was about the treaty between the vampires (Cullens) and werewolves (Quiluettes).
Jacob told Bella the scary stories in the woods and than mentioned the Cullens. Later, Bella did some research on the internet.
Because in the car after the restaurant, she told him that she knew and they talked about it.
because in the beginning of twilight he told her, because she asked him, when they were in her truck. Jessica told her before that thoughs
In the Twilight book, Bella hears how/why Edward, Carlisle, Esme, Emmett and Alice were changed. Bella discovers from James (in the dance studio) more information about Alice's past.
Of course Bella knows the Cullens and Hales are adopted!!
the beach doesn't have a name but it is in the quillute reservation in Washington
No. Esme renovated an abandoned cottage in the woods near the Cullens' house for Edward and Bella.