The question is a little bit too general, the truth is that internet marketing is not that much different than marketing in the real world, the differences come from the fact you are using a different medium in order to advertise, but the very same principles apply to it.
There's a little bit difference but in internet marketing, you don't have to go outside or spread flyers throughout the streets or advertise with the newspapers or television.
Because everything today is already digital or in the internet. News articles are published simply as blogs.
So in that way you can do marketing of your products by making good in each articles that you want to be published.
Marketing problems hides many risks, because I was going to do it, so I have a little fear, affect my sales