Each race is internally consistent and has unique but recognizable cultural aspects. What do I mean by that? I mean that my dwarves only ever drink beer and it makes sense. Elves are all distant arrogant philosophers and their written culture reflects that.
Here, check out what I mean:
Highlights, if you're on the fence:
"because they spend so much time looking at long-term patterns, they've become quite the masters at older techniques. a dwarf never abandons an idea, they just modify it and keep re-using it. as it turns out, that applies beautifully to plants and agriculture in general. dwarves have managed to produce a certain kind of barley that provides nearly all the nutrients that a dwarf-shaped omnivore might require. "
" goblins will co-exist with other races and can be found making a sprawling society even in the harshest lands. this means that in particularly barren places with excellent resources, goblins will sort of naturally collect and fill the available space. this means that other races, when expanding, often need to expel the local goblins to gain acccess to, for example, mines and groves. goblins also especially make their homes in abandoned places, and any place not kept closed and used actively quickly finds itself home to a goblin's ever-expanding brood."