I want to add some more stuff to my houses and such but I totally forgot how. Can someone tell me please?
There used to be a Renovate tool, used to edit buildings and add furniture, but it was removed a couple of revisions past, because it was buggy and would sometimes crash the game. Last I heard, the Devs are working on it and will put it back in when everything's working properly. In the meantime, you'll have to build a new Workshop if you want more stuff.