Seconding Google's Python class. It does an amazing job of covering the most common use cases in a very short class. I'm still relatively new to programming and whenever I'm writing code I invariably find myself referring back to the lessons from the class.

Note that the class is taught in 2.x so if you're running 3.x then the example code won't run. IIRC, updating the print statements for the new version was the only change required to make them work.