How to download minecraft maps
Plainly, the start was a fail. But here.
1. close minecraft.
2. download winrar (if you already have it, don't download it)
3. get your map and open it up
4. go to windows
5. type in run
6. in run type in %AppData%
7. go to roaming - .minecraft - saves
8. go back to the map file and drag every folder to your save folder on minecraft other than the "..." folder.
9. exit winrar and whatever your on except necessary things.
10. go to mine craft and check you single player worlds!
Hope this helped.