I picked up Jo Linsdell's book about a week or so back and absolutely loved it!
For any aspiring author who is looking to understand how to use social media to promote their work, this is a great guidebook on the basics that must be done. Jo gives great real-life examples of how branding, marketing and public relations are done using social media. There is also an added value - many of the tips that Jo gives can be applied to any online business marketing effort. It's just that well put together.
Great job, Jo!