I’m slowly learning and transitioning to Drupal the website of a local organization for which I volunteer. I am wanting to make a user discussion forum component that will also double as a space for people to post muscial instruments for sale or trade. No payments, just connections made. I’m looking at the now contrib Forum module, but it seems to be on the down swing - as are forums in general - but a forum does feel like a nice fit for this use case.

Can anyone provide some perspective or advice on a direction to look at for this? Any thoughts appreciated.

I'm using Bootstrap RRC theme and there doesn't seem to be a way to edit the header image of a page from the UI.

Are these only editable directly in the template files?