The links don't work because dedicated hosting sites require that you update the files from time to time or they take them down.
As to the tutorials, I've never thought about it because the canals all come stock with the major supermods nowadays. As for making bases, there are members who know how to do that. Hopefully one of them will volunteer to help.
If anyone has a copy of those tutorials, please PM me so we can get them up here.
[edit] Oh, look what I found right here on Subsim! Not poking fun at you, ridley; I didn't know myself. It doesn't seem to be the one you wanted, but it's a start.
http://www.subsim.com/radioroom/down...o=file&id=1315