Find a location. Decide on a spot to record. If you can't go to a professional studio, try to pick a quiet room away from distracting external sounds like sirens, opening and closing doors, and people talking on the phone. Read your script aloud, and pay attention to the room's acoustics. Does your voice echo or sound muffled? If so, consider recording in a different space or adding furniture to fill in the room.
Professional cameras, like DSLRs, give you fine control over the manual settings of shooting video and allow you to achieve the shallow depth of field (background out of focus) that people rave about. While they're primarily used for photography, DSLRs are incredibly small, work great in low light situations, and pair with a wide range of lenses — making them perfect for video. However, DSLRs do require some training (and additional purchases) of lenses.