God of the Old & New Testament

As a new Christian, who started reading the Bible all the way through, I found myself curious every time I read the Old Testament and comparing it to the New Testament: Why is God different in the Old Testament than the New Testament. For new Christians, I am sure they are wondering the same thing. Geoff Ashley from The Village Church has done a great job in talking this very subject in a two-part series called, God of Two Testaments:

Part 1

Part 2