Once you have a video uploaded it is a good idea to promote it. Share it with friends family and your loyal customers. If they can comment and rate it even better. YouTube is a social site, so put in the time to reply to some of the comments, and make friends. Some people will subscribe to your channel and you can selectively subscribe to other users channels. You become part of the "community" that way. Use video on your website home page. and if you have several videos you can add a gallery or a page dedicated to them... the search engines like that.
Here are some basics to get you started. Name your channel something that is relatable to your business not necessarily your business's name. Write a description (business name can go here) and include a link to your site. Even if your video isn't ready to be uploaded start watching and commenting on videos... you might made some "friends".