vampire diaries : get ready for katherine

I've watched the first season and was surprised where at the end Katherine show up!
She was the vampire that Damon search for until now. Damon thought that Katherine was trapped with the other vampires in the tomb but she was not. She lived happily with her own life. Poor Damon, at first I thought he was evil, well he was, he always do bad things like feed on human kills them not like his brother Stefan. I think most of the people who watch vampire diaries will prefer Stefean Salvatore, his not only handsome ( from the eyes of Elena) but he seem more mature and kind....however, i prefer Damon better~_~
he have the kind of mystery around him, likes to keep secret, like to do things by his own, cruel i admit it but deep in his heart i know there's good in him, annoying a lot but i still like him~_~

i think i've went off too far.....what i'm going to talk here is about Katherine..
we all know about Katherine through the stories they told about the past, about how she play off the salvatore's brother, Damon and Stefan, how she change them and how the villagers captured all the vampires and left them in a tomb, set fires on it. Katherine manage to escaped that (I was not surprised when Anna told Katherine alives) what i can't imagine is her true power....is she have any connection with Elena....why do both of them look alike??? are they related with blood?? if so, is Elena a vampire to??? too many question but i don't like to read to know about it....I want to watch the next season of vampire diaries...hopw it air in malaysia soon~_~