Everything, written down
The answers that would otherwise be repeated in Discord: getting a map into your game, what a download contains, and how commissions are priced and delivered.
Maps
Getting a downloaded map into your game, and keeping it working.
Installing a downloaded map
Unpack the download into your saves folder and the world shows up in the singleplayer list.
What is inside the download
One .zip per map: the world folder, plus whatever extras that particular build needs.
Versions and compatibility
Every map lists the Minecraft versions it was built for. Newer usually works; older does not.
Using a map you bought
Play it, host it, build on it. Do not resell it or pass the files on.
Commissions
How a custom build is ordered, priced and delivered.
Account & support
Purchases, downloads, and getting hold of a human.