Plenty of people are into podcasting and game streaming these days. You will need to invest in a decent microphone to go with your camera. The Blue Yeti Nano has you covered. It is a USB microphone designed for YouTube, game streaming, and podcasting. It features 24-bit sound and works with Mac/PC platforms.
The Yeti Nano has a no-latency headphone output. It has Cardioid and omni pickup patterns. You can order it in a bunch of fun colors (Cubano Gold, Vivid Blue, …).