Oh. Well, you’ve reached the end of the tutorial... And yes, as you can see, it’s not finished yet. I’m actively working on fixing that, though, please be a little patient :)
In the meantime, the best course of action is to peruse the resources in the next section, and experiment by yourself. Well, given that, it may be a good idea to ask around for advice. A lot of the problems and questions you will be encountering have already been solved, so others can—and will!—help you getting started faster.