Hillary was hamstrung as she couldnt criticize Obama too harshly and also she didnt bring out Wright early enough.
So the lesson is hit hard on the issues, like increasing taxes on small business means everyone pays more and job losses, and dont wait too long to use the Wright, Rezko and Ayers scandals.
Since Hillary and Obama agreed on most of the issues, there was never any discussion of the issues. She was left to fight the battle on the experience and other personal qualifications. The media helped deflect most of these type of attacks (using the race card)until it was too late. By the time the public got to know Obama, the race was already in the bag.
If Hillary would have taken a que from her husband and ran as a centrist from the beginning, she would have won the nomination.