Search for Maps Here!
There's a download button at the bottom of every map page, when you click it the download will start. Unzip the file and put in your worlds folder or upload it to a server to play it.How to get the Resource Pack of the map!
The resource pack of each map is included in the world download itself. In vanilla singleplayer it will automatically load once you join the world. For multiplayer just use the resources.zip archive, that is included in the world as a resourcepack! There's also a separate resource pack that you can use in multiplayer.