The book of Daniel is one of the most interesting in the Old Testament. Set in a turbulent period of history that has many similarities to our own day - the collapse of a great empire; suddenly free nations scrambling to set up their own spheres of influence; turmoil in the Middle East, complete with terrorists! - Daniel's faithfulness in adversity has a lot to tell us about loyalty to God.
In addition, there are prophecies that appear to reach down to our own day but whose meaning is not immediately apparent.
The "More info" link takes you to Amazon where you can find a little commentary explaining the book of Daniel. Modesty forbids that I should mention the author's name.