Biggest lesson apart from being careful about large capital investments: If you think you can do things _far_ cheaper than an incumbent in an underdeveloped market, chances are they too can do things far cheaper, but have so far opted not to; forcing them into a price war without large backing is not a good idea.
Then we continued for a few more years doing consulting and business hosting as well as handling the backend support for IDG's Norwegian ISP, before the lawyer of our original investor hooked us up with much better paying jobs for the Norwegian office of a California based startup.
It was an interesting experience. Learned a lot. Didn't make a lot of money. But it defined my career - 6 out of my 8 subsequent jobs have a "lineage" going back to that company.