Definitely read a note from your own school's journal, paying attention to the different types of sources and how they cite them. I also read the Bluebook cover to cover, flagging any citation forms that never would have occurred to me or that I thought were interesting. That came in real handy during the competition, since competition writers went out of their way to use some weird sources. I would not have graded onto LR, but I think my citations got me on anyway.