I just finished reading ProBloggers Guide to Blogging for your Business. I highly recommend you read this book. As a business owner I don't have the time to take the trial and error approach to blogging and this book was a great help to me.
The book offers step-by-step advice on setting up a blog, conducting targeted keyword searches, understanding your competition, building a strong social media footprint and how to set a successful business blogging strategy.
Click on the link to the right and buy this book right now!
While you're at it, you may also enjoy reading 31 Days to Build a Better Blog. I did. I've put a link to that book just to the right too.