How to make a start: download server to upload to my host?

I simply want to try this out.
One man private individual looking for free open source solution for need to be able to interact with my internet site from various home computers at any time: so that I can interact with one set of documents and avoid google docs.

I am hoping this is the answer. But went to download ready to upload to my host and download server just doesn’t respond. I cannot download the server.

Please tell how do that?