The best place to look is on the minecraft forums
you can download it on the minecraft forums. just google funland minecraft map
It's a multi-step project. You should probably take some screenshots of your world so people don't think you're giving them a virus. Then you should upload those to an image sharing website. After that, upload your Minecraft world to somewhere like dropbox.com. Finally, make a forum post in the right section of the minecraft forums and link the images and dropbox.com URL. I suggest going to the minecraft forums for more help, because that's really all I care to give.
In beta 1.6.6, you can just get the map by making a compass, put it in the middle of the 3x3 crafting box, then surrounding it with paper.
First you have to find the specific download on the map online. A wide variety of forums and blogs have this available.
On Minecraft Forums
Build the map on Creative Mode then go to seedscope.net and upload your level.dat for the map on the Change Survival to Creative option. You should then download the new level.dat. Replace it with the old level.dat and when you start Minecraft, you should see that it is now a survival map.
it is a challenge map meaning you must download it from a website like the minecraft forums you can find servers that will have it but they require bukkit for you to install on to the server
minecraft
By going on to the minecraft website and clicking on profile then press upload image and upload your image from there
Just Yahoo/Google "Minecraft maps", go to the minecraft forums or go to Youtube and look at some of the videos. They some times put a link to the map in the description of the video for you to download.
Go to planet minecraft.