Social media platforms like Facebook, Twitter, LinkedIn, YouTube and Slideshare allow businesses to engage with customers. When starting, engage with one platform like Facebook by creating a business page and updating your profile. Twitter allows posting short messages called tweets, and uses hashtags to group related tweets. Hashtags and retweeting allow engaging with others on Twitter, while direct messages allow private conversations. Bitly shortens long URLs for tweets. Engagement through sharing, supporting others and promoting builds relationships on social media.