Most podcasters know Focusrite for its Scarlet line of audio interfaces. The Vocaster is a similar product, but with an optional software interface, a nice layout for live streaming, and a way to connect to guests and co-hosts via your phone.
There are plenty of people reviewing the Focusrite Vocaster on YouTube. Rather than give you something that has already been done, I made this episode so you could actually hear the it in a podcasting situation and how it sounds with an inexpensive, beginner-level mic, Audio-Technica's ATR2100.