I like Taylors [Noncommutative Harmonic Analysis][1]. [1]: http://books.google.co.uk/books?id=8y11t3mhLO8C&lpg=PP1&ots=5F9FYK2efG&dq=Taylor%20noncommutative%20harmonic%20analysis&pg=PA20#v=onepage&q=&f=false