Looking to gather top sales expertise? While many resources are available, such as blogs, books, and podcasts, Twitter offers a way to learn from experts in 280 characters or less. Sales experts’ experience and insights are neatly presented on Twitter for quick review. Best of all, the information shared doesn’t cost you a cent. Base has rounded up 55 sales pros, based on criteria like how often they post, how many followers they have, and what their specialization is. From sales strategists and best-selling authors to coaches and negotiators, here are our top picks of sales experts to follow to help you become a better salesperson.