Recommended videos on digital marketing

I am going to spend the day learning more about marketing, advertising, psychology, and the 'science' behind a product succeeding or failing. I'm interested in any kind of video with legit information on anything related to, owning a business. Offline/online hybrid methods are great too

So I just got on Youtube and I'm looking for videos that will have some knowledge worth writing down. Started with the keywords 'digital trends 2015'.

I'm into the idea of creating a product that fills a void or demand, using marketing/advertising techniques to scale it up, etc.

I'll post videos links if I found them helpful...

Here's the first one I found https://www.youtube.com/watch?v=l_Ei7CxXwuo

https://www.youtube.com/user/TheWishpond/videos
https://www.youtube.com/user/StartUpTakeOff/videos

On building an ecommerce site, 5 major don'ts https://www.youtube.com/watch?v=Or8ZQ0TSCLo
This guy has some good videos as well, I think I'm gonna learn about ecommerce websites for the next two hours as that has been my dream since I was under 18. I've always wanted to own a supplement shop, I'm rather passionate about understanding how molecules and plants work, in and out of the body
https://www.youtube.com/user/narayguy/videos