One of the great things about the age of the Internet is that all kinds of information is available for free. If you are interested in learning more about the Gospel of Luke before we begin quizzing this year, you may wish to check out this course from Reformed Theological Seminary on iTunes. This is the recording of an actual Masters Course on the Gospels and Acts with a long, in-depth section on Luke. I found it to be very accessible (I am listening thru the whole course now) and it will be useful if you want a good sense for the unique strengths and emphases of the Gospel of Luke.
This requires the free download of Apple iTunes for MacOS X or Windows.