EBSCO has professional journals you might like to read.
Check out the database link on your left. They have resources for you and your students.
DIRECTORY of historical sites directs you to area study sites, primary document sites, presidents info....and more.
Thinkfinity is an incredible site for lesson plans [cool ones, really!], primary documents to use for classes, and a host of other teaching tools.
The History Place has links to presidential speeches, primary documents and other cool history things.