For producing the video, here’s what to do:

1. Gather images from relevant sources. Make sure you have rights to use the image in your videos.
2. Create some slides in PowerPoint and save them as images.
3. Use Animoto free version, upload the images, add music and background. Then produce the video.
4. Watermark the video with your website URL.
5. Upload the video to your YouTube account.
6. Write an interesting title, description and tags, and link to the landing page in description.
7. Add an annotation note to the video.

Publish 4 videos, 1 video for each keyword.

In case you are new to making videos, let me tell you it is very simple. The first time when I learned how to make a video, it took me around 2 hours. Now it takes me just 15 minutes.