[saluki]

Since you have the basics, expand on that.

Build a more complex app that you would use.

So pick out a hobby or something that interests you that an app would improve your experience with.

Plan out the requirements/scope and start building it.

Building any app you're going to run in to things that you won't find a tutorial for, or you might have to combine a few tutorials to create it.

That's the best way to learn, is just taking on something and building it.

If you don't have any ideas, ask a friend or family member if they could use an app. You'll learn even more if someone else is telling you what they need/wish it could do.

Good luck expanding your skills.