Sid Meier's Civilization VI

• A single luxury resource gives 4 amenities that get divided up among your cities with the amenities going to whichever city needs it most. Multiple copes of a luxury resource don't normally give any more amenities and should be traded away.

• Gold is highly useful, make sure to not neglect Harbors/Commercial Districts too much early on as they're the primary method of acquiring new Trade Routes.

• Plan ahead with your district positions by checking the adjacency bonuses they get. A common example is placing a Campus and/or Holy Site on a tile surrounded by mountains, or a Harbor near coastal resources. Certain district buildings also provide bonuses to other cities within a certain radius, usually 6 tiles.