Runner's Training Tips: First Marathon

I just entered what will be my first marathon, on November 23rd in Philly, and am looking for a good training program to follow.  I am currently running about 25 miles a week and completed a half-marathon back about 2 months ago.  Any suggestions for where I could find a good training program to get me ready for the marathon.

Philly is a great course!  Good luck with your training!