Here are a few books I would recommend to those looking to get published.
For those going the agent or traditionally published route, these are invaluable:
For those wondering how to tackle getting self-published and marketing yourself.
I would recommend signing up to David Gaughran's newsletters - plus you can get Amazon Decoded for FREE by doing so. (click on the image of the book to link to his site)
I would also recommend checking out Dave Chesson & his Kindlepreneur website
He provides a wealth of free information.
And if you are looking for help with writing content for your blogs, blurb or making your selling content sharper, the best free resource is: Copyblogger.
You can find an article I wrote about it here.
But this book on Blurbs is a must read for all self-published writers!
Books to help with the technical side of writing
The first three are for the grammatical side.
These are for structuring and outlining your book.