Next, you need to set up and build your YouTube channel. Your YouTube channel is your homebase for all your content. If you already have a Google account for Gmail or Google Drive, then you can use that to log-in to YouTube and start setting up your channel. Pick a username that works for you and is memorable (if you’re using an existing Google account you’ll have to edit your username in Google+).
Every time you link to another one of your posts using a specific text it helps to tell Google that that other post is about that specific thing. In turn, this helps that other page to rank for that term. And the more pages that you have linking to a specific page using that text the more it tells Google that that page really deserves to rank for that keyword.