So, that's it, if you followed along with the lessons, you should now be able to write some simple programs in NodeJS.

I'd suggest doing exactly that: after learning the basics, building a few personal projects is the best way to practice and become a better programmer.

It doesn't really matter what you build, what matters is that you challenge yourself to solve problems with code.

Modern programming languages are incredibly powerful, and NodeJS is probably the best toolbox to experiment with in this phase of your journey.

Good luck!