Where is there a guide on just the new things from Civ 5? Oh and maybe a guide to planning cities, it's apparently much more complicated now.
http://civilization.wikia.com/wiki/Civilization_VI
http://civilization.wikia.com/wiki/District_(Civ6)
http://civilization.wikia.com/wiki/Wonder_(Civ6)
Planning cities in detail is complicated since it depends on individual factors :
- the victory type you go for
- the play-style : wide or tall (Wide profits more from culture + science per population, there are no per-city-penalties in Civ 6.)
- the available City States since CS can boost your districts
- the available terrain (map type)
- some civs have unique districts, district rules and/or improvements
Wonders now occupy a tile and require special terrain and/or adjacent districts.
District costs increase from 60 to 600 depending on your progress through tech-tree and civic-tree.
Settler and Worker costs increase with each unit. Trader costs increase with progress.
Adjacency boni for districts can be doubled via policy cards. (Additional Policy Card Slots are granted by certain Wonders like Big Ben.)
In general it is good to have a harbor or trade hub in each city to increase the number of traders.
You can use districts from neighbouring cities to push adjacency boni.
Example :
Germany's Hansa gets +2 per adjacent Commercial Hub and +1 per adjacent ressource. Commercial Hub gets +2 for being near a river and +2 per harbor.
You can place 3 cities with overlap in river terrain and then arrange 3 Hansa and 3 Commercial Hub next to each other to optimize the individual boni for each district, e.g. a Hansa surrounded by 3 Commercial Hubs gets +6, with the bonus policy card +12
The game does not help you with this since it shows you only the bonus of the district to place but not the changes in boni for already placed districts. You have to figure this out in your mind or you can draw a map.
You can also use markers in game to mark tiles which might help.
Industrial and Entertainment District allow high level buildings which provide bonus to all city centers in 6 tile range.
Depending on the distance between your cities, you can place one each of these districts to supply 3-7 cities with bonus production and amenities.
(If you play Germany and/or have high boni from industrial CS, you may still want to build Industrial Districts in every city.)
Settling cities close allows for cheaper purchase of tiles since Gold costs for tile purchase in Civ 6 increase with progress and distance (+50% for 3rd ring), not the number of tiles purchased. The game seems to first take 2nd ring tiles and then 3rd ring when expanding via culture. Settling in distance of 3-4 tiles means you have mostly 1st and 2nd ring tiles inside your empire.