What's the best marketing strategy?

 After reading the article "A Good Marketing Strategy", i think creating a walkthrough of a useful website such as YouTube is the most interesting option. I watched plenty of YouTube videos explaining devices I bought and couldn't figure it out, and they always helped me ! I think the principal advantage with Youtube videos is that they can offer a more complete explanation than the one in the instructions. Also,  the videos can add visual support and it can always be helpful. These videos are a good way to make the customer happy; they are really efficient. The visual support and the more detailed explanation can always be helpful, and the best part is they are super simple to make!