The book: Leveraging LinkedIn for Business Development By Brynne Tillman and Lisa Peskin Why you need it: When you’re mining for prospects, LinkedIn is often your best source to reach a key decision maker who may need your product or service. Many companies don’t know how to use LinkedIn to drive sales, but this guide (written by the founders of Business Development University) will take you to school. Why we like it: This down-to-earth guide + workbook tells us step by step how to turn a weak LinkedIn presence into a valuable sales strategy. It’s great for new and experienced social media users alike. What we learned: LinkedIn works best if you start nurturing connections when you don’t really need them. When the time comes to look for a job or pitch your new product, you’ll have a supportive network.