I've taken a course in QM 1, based on the Schrodinger picture and QM 2 looks to be a continuation of this picture. Looking through Wikipedia, I found the article on the Dirac picture. Is there a good undergraduate (at the level of Griffiths or Shankar) textbook on this picture of QM? Since Statistical mechanics, Dirac has been a sort of idol of mine and I'd like to learn more about this picture. Thanks.