All major trends?

I would systematically read all the book reviews in a top history journal, say, the American Historical Review. A good review will comment on the book's place in the stream of historiography on its topic, and hopefully at its larger placement within current trends. Not all reviews are this good, but they'll build up over time.

This method has the advantage of being dynamic--you're not frozen in a certain year's perspective, or limited to a specific selection by a single editor. It's not as tidy or straightforward, but all in all you'll probably learn more from reading applied historiographical method than just "this is what the method is"--think, for example, how useful it is to see examples of little-m marxist historiography in order to understand how it's different from big-M Marxist, from social history from below, and from economic history.