I'm not much of a linux user, it's been years since I touched anything like this so please try to keep any replies as simple as possible.
So, I updated the firmware of the MBW and enabled SSH. Installed optware, transmission, nano, all the basic stuff and no problems except feeling like a noob. Everything was working fine until I was trying to set up the web interface for transmission, I was not able to get anything on http://<MybookIP>:9091 even after adding my IP to the whitelist in settings.json as instructed in one of the tutorials here (can't find it right now).
Anyway, I couldn't get transmission web access to work. And in my futile efforts to get it to work I probably disabled some web service or screwed up some settings somewhere so now I cannot even get the standard web interface to show up. I can mount the share just fine, and I can log in via SSH. But I cannot get any web interface on the MBW to work whatever I try. Please can someone give me some clues?