Welcome to this morning's edition of "First To Know," a series in which we keep you in the know on what's happening in the digital world.
Today, we're looking at three particularly interesting stories. The first day on the New York Stock Exchange was a promising one for Twitter. The publicly traded stock opened at 73% up from its IPO price of $26 per share. Facebook is still all about the Likes, but the social network is also experimenting with five-star ratings, according to a report. Gamers, here's a study you'll want to share with your parents: Video games could make your brain grow.
Check out the video above for more on these stories.
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