If you mean you want your friends to be able to go to your map, they have to download it.
if there are fho files those are items in your map, and you might want to include those in the download if you have meshes and stuff in the map.
other files to include (if there are any) :
.fhm (the map - Always need to be in there!)
.fho (items in the map. if there are meshes and stuff in the map, put those in, or your friends will NOT see the items)
.fhw (these are custom weather cycles I think. But beware, I've heard custom weather may crash other people.)
.fhs (these are custom skys (sp?). But beware, I've heard custom skys (sp?) may crash other people.)
Here is a full totorial from the "maps" section.
How to upload a map that YOU made, so other people can download it and explore it
Before you even start, make sure to press the 'export' button in mapmaker.
First, you must have a program called WinRar. This is a free and safe program, and you can download it Here
Secondly go to My Computer > Local Disk (C:) > FeralHeart > Exports
In this folder, there will be files. The game has told you what it exported when you hit export. It definitely exported a '.fhm' file and one or a few '.fho' files, and possibly a '.fhs' and '.fhw' file. The '.fhm' file is the map info itself. The .fho is the objects files and info, the .fhs is the sky (if you put in a custom one) and the .fhw is the weather file (again, if you put in a custom one.) Drag all these files out onto your desktop. Right click on the .fhm file. Once you have right clicked on it, hover you mouse over 'send to' and then click 'Compressed (zipped) Folder'. A message might pop up, click yes. Then, drag all the other files into this zipped folder as well.
Next, go to Mediafire. You may create an account if you wish, but it's not compulsory. Upload the ZIP file you made to this website. When you've done that, post the link on your thread. People will now be able to download your map. There are other websites like Mediafire, such as Rapidshare.
How to download other people's maps and install them correctly
Click on the link posted on someone's thread and download the file to your computer. Save it on your desktop or anywhere else you wish. This file will most likely be a ZIP folder. If you're unable to open it, download WinRARp.
Once you open it, you'll fine a few files inside. The most important is the .fhm file.
Go to My Computer > Local Disk (C:) > FeralHeart > Exports. Drag ALL the files into this folder, unless otherwise instructed by the user's 'ReadMe' file (if included).