Just as an FYI, because here's a new resource I just became aware of.
I've always been a fan of reading advice on how to run the game well. I think some of the best published advice is in the d20 Call of Cthulhu book, and some of the second best published advice was Ray Winninger's column on the art of DMing that ran in Dungeon Magazine during the last stages of 2nd edition and the early stages of 3rd. In fact, I've very specifically referred to Ray's advice more than a few times.
Here, check out his column here, most recent postings at the top. I think it's a fun read in its own right, and heck, I may even have picked up a tip or two, even though I've been running games off and on for the better part of thirty years almost.