The Renegade Writers book 'Query Letters That Rock' is great, it came highly recommended by a freelancer I know and I've used it to craft my very first query this week, which I think (hope!) is pretty good. We'll see if it worked in a couple weeks, I'm sending it out on Monday.
Mother. Doula. Writer. Feminist. Activist. Mum to Moo Moo (4) and EJ (2)