As many English teacher-type people do, I have about three novels in the works at any given moment, and I ran across Ellen Brock's website while browsing the web for writing advice. She is currently doing a "boot camp" free of charge on her blog, and so far it has been really helpful. She is direct, thorough and gets her point across in a fun way. I think the boot camp would be most helpful for people who have at least a first draft of a novel completed, but even if you don't, I would sign up for the emails and just save them for when you do!
Here's the link to the first lecture: