Hello All and Happy New Year!
This year, I will be teaching the book of Psalms for the very first time. While I have studied the Psalms and completed a rather in depth, two year study on the book, my fear is that I will fail to illumine and connect the various themes. Anyway, I am not teaching every Psalm, but I do plan on always making the student is aware of each Psalm's background, theme, topics, etc., etc.
What is your favorite resource (or two) for studying or teaching the Psalms. By the way, I am about 1/2 way through the Psalms course offered by FL, so you do not need to recommend that resource. 
Thanks in advance!