Any practical tips on building a community?

My name is Bertha, I hail from Johannesburg in South Africa. I initially started my career as an Engineer, I had been doing it for over 15years when I decided to completely switch careers and start programming and coding. I am completely self-taught from online courses, programs, and on-the-job training. With that said, the dev house I founded has developed pretty amazing software over the years (in my mind). One of our latest products is Skhokho - https://skhokho.io/ Our Ship, upcoming page can be found here - https://www.producthunt.com/upco... have been learning a lot from this community, I read a lot of threads - trying to figure out how to get the most out of Product Hunt and prepare for a good enough product launch in the next couple of weeks. One of the things that comes out a lot in the discussions is - Building a Community. You hear it all the time - build your community, mailing list, and following. I would like to ask the guys who have been doing it for a long time or guys who have managed to build successful communities - how?👉🏾 How do you start from scratch👉🏾 Which platforms have worked best👉🏾 How do you keep your community engaged👉🏾 What daily, weekly practical steps do you take to actively build your community👉🏾 What worked, what did not work