I love Construct so I won't switch platform just to use Kongregate. It's not exactly a big issue right now, just something I'd like to look into.
I do use computers a lot and I've programmed in dozens of languages - I only use Construct now because it's such a joy to use and makes programming fun. Point I'm making is, I'm very computer-savvy, so I don't think this is just a case of me being dumb. Maybe though :p
The main problems I had with the tutorial were, first it said to export as a html5 project, which seems strange considering theres a specific Kongregate option in C2 now. And secondly, the links didn't seem to link correctly or it wasn't clear what I was looking for.
I'd appreciate an updated tutorial but I don't expect you to go out of your way. I get a feeling that something has changed since you wrote it, which may be why it didn't work.