Dump Stat Adventures goes through some of the basics of worldbuilding, including some different methods for approaching the beginning of your worldbuilding process.
Scott Gladstein discusses the difficulties, confusions, and problems caused by the terminology around races in TTRPGs.
Towns are probably the most balanced location for Dungeon and Dragons stories. They are not too big like the cities or small as villages, yet towns strike a perfect balance in their scale. Dungeon Goblin walks through some techniques for creating your own towns.
An important aspect of creating a world that feels lived in is that it must have its own history. Just like NPCs don’t suddenly pop into existence, your world wasn’t created yesterday. Master the Dungeon goes over some techniques for writing your world's history.