I have attended multiple Bill of Rights Institute seminars, and have always been really happy with my time spent.
I frequent the seminars they have out occasionally in Delaplane, Virginia... but they have workshops that are free (paid for by generous donations) to educators, and you leave with great resources.
I personally have two full DBQ books covering the American Presidency and Federalism.
There are lots of opportunities all over the country, so check back with them frequently to see what is available to you!
Here is what they have through the fall of 2014:
June 3-4, 2014 – Federalism and the Constitution
September 16, 2014 – Documents of Freedom: A Tradition of Rights
Kansas City, KS
September 23, 2014 – Being an American: Teaching the Founding Documents
October 21, 2014 - Documents of Freedom: A Tradition of Rights
October 23, 2014 – Documents of Freedom: A Tradition of Rights
October 28, 2014 – Presidents and the Constitution: The President and Federal Power
New York, NY