This video is about what steps you can take to promote your Squidoo lens from sources outside of Squidoo itself.
One way to do this is via social media, web 2.0 or whatever you want to call it. Get your friends on facebook, digg, stmbleupon, twitter etc. involved and have them visit, comment on and rate your lens.
The other possibility, which this video focuses on, is to build backlinks to your lens (assuming you have selected a good keyword). You can build anchor text targeted backlinks by writing articles and submitting them to article directories and you can use social bookmarking sites to add your lens URL. All of these backlinks will eventually lead to your Squidoo page showing up on the first page of the Google search results and that should get you a good bit of traffic.