I've become a big fan (BIG, HUGE) of K.M. Weiland's website Helping Writers Become Authors. I'm still working my way through all of her "How To's," but I used the How To Outline Your Novel series for my second book, Her Majesty's Fury. I so wish I had read this series before my first! It would have saved me a lot of structural edits. Sigh. Learn from my mistake!