The big trend in internet marketing seems to be video. While I see advantages to video, I also see drawbacks. The main problem is video’s lack of value for reference. When I have written instructions, I can refer back to it. I can make additional notes and highlight important points. Another point in favor of written instructions is that you can take it with you and read it anywhere. I always have something with me to read or study so I can take advantage of blocks of free time. The best of both worlds would be to provide video instruction with written documentation.