Hunker down and get to work learning the 101 of running an ad. Starting with Facebook is your best bet, and there you’ll be using the conversion optimization feature. Conversion Optimization guarantees that your videos are seen by a target audience who are likely to be interested in your business and will complete the lead of sales funnel you are hoping for.
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.