I think the answer may change a lot depending on which field are you thinking about; because "the community" will be quite different as well. Regarding "how to

I think the answer may change a lot depending on which field are you thinking about; because "the community" will be quite different as well. Regarding "how to write better quality articles?" one key part is reading a lot of high quality articles from the field. Of course, there are other things yo may want to do, but again, it will depend on the area.