Creating Videos for WordPress/affiliate marketing

Hi I would like to create at least one, but more likely a number of, video(s) for a website about WordPress and affiliate marketing. The first video would be about using WordPress for online marketing. It will be based on articles currently on the website. You need to be familiar with WordPress since you would need to include snapshots of it in the video (that might be most of what is in the video). Would also need a good voice explaining things (in English). As for the content of the video, I would probably have to write that out. Would like to hear suggestions if possible though. Not sure of the length. Probably at least a few minutes. I will use the videos both to give people who come to the site something to watch if they wish and for video marketing. Will start out with one video and go from there. Would like to pay a set price for the video and not an hourly rate.