Get a startup copy of NBWiki
It is not difficult to set up an NBWiki as a free-standing website or as part of another site.
Then NBWiki setup is provided as a single text file with embedded instructions on how to use it. At present this file has been created but not tested. You are welcome to "have a go" at your own risk.
Download the NBWiki setup (alpha test version) here (34K)
If given the chance, select the option to save the file. If it appears in a browser window, save it from there.
Please see Configuring NBWiki for how to adapt NBWiki for your own purposes.