"three clue rule" essay may save you quite a few headaches. And even if you're not exactly new to more story based gaming, there's some nice theoretical and practical thinking in the Alexandrian. I particularly like the pieces on game structure, of which you can find the first article here.
Have a look, and see if you can help Justin finishing the 3rd edition compatible Legends & Labyrinths rule book, too. To be honest, I'm not too fond of third edition, but the idea of having *better* and easier rules that can handle the same modules and materials sounds nifty to me. And that's what L&L proposes to do, so I'm at least curious.