http://www.amazon.com/New-Sales-Simplified-Prospecting-Devel...
If you are responsible for getting new business, it is probably the best sales book I have read. Walks through defining your target customers, creating appropriate messaging to reach out to those customers and how to structure discovery and presentation calls.
https://www.amazon.com/New-Sales-Simplified-Prospecting-Deve...
I read it in January and found it really helpful