Optimizing Your Account
Your first step is to obviously create a YouTube account if you don’t already have one. Assuming this is going to be a business account, do your best to secure the name of your company as the username. If you can’t, find something else that will be easy to brand. The URL for your YouTube account will look something like [youtube.com/profilename]. That means getting your brand in there, will almost ensure that users will find it when they perform a search for you. Once you decide on a username, you’ll also need to give up the goods – telling YouTube your country of residence, your zip code and birth date.
With your account created, go ahead completely fill out your profile. Upload an avatar, give yourself a keyword-rich description, link back to your site in the Website section, share your hometown and dig into the hobbies, focusing on activities that complement your business or line of work.
The above is quoted from Rose Anderson's post on how to effectively use YouTube as part of our online business strategy. Check it out here - How To Use YouTube for Effective Marketing.