Before thinking of having more followers, you may want to consider how to get more viewers..

- Use a catchy title

- Include description

- Use relevant tagging

- Be social. Share your video

Your viewers are also your potential followers.

There's no need for a passport. A valid identification card would be enough.

If you are US Citizen, You don't need a passport within the US.

If you are a citizen of a foreign-country, you'd be required to carry the passport issued by your country.