Twitter launches a music app, tax day cometh, getting skilled at using your DSLR camera, PRNews shows you how to harness the power of social media, tech geeks play "Pong" on the side of a skyscraper in Philly, New Yorkers tout eco-preneurs and innovators tout each other…this week’s notable news and startup events for young treps.

Facebook unveils long-awaited smartphone, the mobile phone turns 40, how to make cash from Pinterest, opening up about Obama’s new brain research initiative, Vice meets the moguls behind Burger Records, climate change threatens the dominance of today's wine-making regions, paying off your sleep debt with a good night's rest… this week’s notable news and tantalizing tidbits for young treps.

You might be surprised at some of the companies that have reached the billion-dollar valuation mark.

Grom Social is a network for kids, Facebook's more lucrative Hacker Cup, a Pinterest for cats and more.

Make the most of your online marketing campaign without spending any money.

Do you really know how to use Pinterest to help attract people to your business? If not, here's a brief tutorial.

Serial entrepreneur J.R. Johnson launched his first company 12 years ago at age 28. Here's what he wishes he knew then.

The social sharing pinboard isn't just for recipes and animal photos, it can help you build a vision for your business.