The main thing you have to learn how to do is to work online. This can be anything from marketing, design, virtual assistant, websites, video editing etc - basically, anything that will allow you to work and earn money from your laptop.
When you can do that you can then work and travel at the same time because all you'll need is your laptop to make money.
I recommend reading a great book called The Suitcase Entrepreneur which details everything about how to become a digital nomad. I recently did a book review on it on YouTube https://www.youtube.com/watch?v=R3frH-4n0bg&t=2s
Hope that helps and good luck!