In the new YouTube layout there are lots of ways for you to add information and links to your channel. You can feature other channels in the sidebar, as well as links to other social media sites and outside pages. There is a lot of information about yourself that you can show or hide.
You should take advantage of all of the features in the Channel Info section to promote your videos to visitors. Also, SEO is useful here, so find and use the same keywords that your audience seeks.