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Cool, glad that this stuff motivates you to be creative. Have fun and create, experiment, try various things that you find interesting ... HIVE is a great and rewarding place for that, your effort won't go unnoticed.

How can I communicate with each community, because I have a lot to learn, I'm also new and no one can provide direction in this matter.

Well, you can communicate with anyone by writing a comment. @hivebuzz has a great tutorial about many things. You can find a good deal of useful information under the TOUR section. https://hivebuzz.me/@lingkar-photo
I also take a look at Chain News from time to time. https://peakd.com/b/badge-321321
In my opinion, the best way to learn is to explore, everything is out there and is free.
I'm not an expert on HIVE, maybe there is much more than what I wrote here, I told you just a few things from my experience.