To use SlimServe, follow these directions (make sure your file extensions are turned on):
Double-click on the downloaded file, and since it's a zip file, PowerArchiver should open it up and extract it for you. (Take note of where it gets extracted to.) It should create the files slimhttp.exe, readme.txt, and a folder called wwwroot. Inside that folder there should be a file called index.html (edit this file with Notepad if you want to customize your webpage).
Now, to run your web server, all you need to do is be connected to the internet, then double-click on slimhttp.exe. To check if it's running, open up your internet browser and type localhost or 127.0.0.1 in the address field, and press enter. If that brings up an error page, then your web server is not running.
If it is running, then all you need to do to share your files is this: copy them to the wwwroot folder. Then, in the SlimServe program window, notice the line that says:
Server bound to xxx . xxx . xxx . xxx : 80
The 4-section number that's before the :80 is called your IP address. To share your files with your friends, you just have to tell them your IP address and have them type that into their web browser. Finally, make sure that in SlimServe's Options, you have checked the option to "enable folder listings".
That's it. Write to me for help. If you want write your own webpages, check out my tutorial.
[ Note: don't keep your webserver running all the time. Only use it when you want to share some files with someone. ]