I haven’t been here long but the community seems friendly and helpful 
The feel of the forum is good too, I quite like Discourse as it turns out! On the other hand it is somewhat different from other fora, so it might be useful to have some helpful links explaining features in the welcome post might be useful for people who haven’t used it before.
There is the playground post, for example, but there are probably others (eg from meta.discourse.org) that would be helpful too. It would be useful if Discourse had a proper user guide, but they don’t seem to…