What's an accurate job title for my self-employed job?

Back story:

I was in university and created videos to help students learn how to play a simulation game.

In those youtube videos I directed interested viewers to visit my Facebook page where I would sell them a tutoring package.

The tutoring package was x amount of hours for y dollars.

Later I gravitated towards selling video packages and sold a video series for $3 USD.

I did that part time from September 2017 to October 2018 and left to focus on school because I was in my final year.

Now I want to add this to my resume to show that I have sales experience.

Any suggestions on the job title?

Thanks!

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