I have two "how to" books by Donald Maass, which I've found invaluable. As soon as I read what he had to say about "tension on every page" I knew it was something I already strived to have in my novels, but would work even harder to maintain in the future.
Now he has another book out called The Fire in Fiction, and already word is spreading like... well... wild fire.
You might like to check out this interview with The Don which discusses his latest book and other pertinent matters. He hints at a technique called micro tension and I so want to know how to use it. Think I need that book NOW.