Mr Kerbibble
A couple of nerds. A nerd couple, if you will.
Ideally, you'll want to use social media as it allows you to connect with the people who like your videos, as well as being able to promote and share content. Another thing you could do, is that some places have 'public bulletin boards,' or conventions have tables where you can leave business cards and stuff. We've done that a few times, not sure if it works entirely, but it's an option.