If you haven’t set up a twitter account, do it today. It’s a free tool that can help you build contacts, share information and gives you real-time access to a wide variety of people with whom you are now connected. Twitter is a microblogging tool where you are limited to 140 characters per post or tweet. Go to twitter.com to set up your account, prepare a profile and start following people in your field of interest. Get to now the terms like trending and #hastags and participate to grow your base.