Congratulations on graduating! I took a year off before enrolling in a grad program too, and I made sure to keep in touch with my thesis advisor and other key figures at my undergrad institution. My advisor was willing to provide me with a reading list of sorts to cover the big works and trends in my area. He also discussed them with me when I started the reading so I could figure out what I should be looking for. See if some of your professors are willing to do the same.
Also, check out History&Policy, the AHA, and places like the American Antiquarian Society on Twitter. They usually tweet, or retweet cool articles about current scholarship in a bunch of fields. It's an easy way to access diverse scholarship.