I've just finished my first session. Very enjoyable! If you haven't got on yet, the most expensive resource you can do at the start with your starting money is iron. Also, I don't know if they'll ever see this but a massive heads up to whoever made this. I was laughing for about 5 minutes to the point where I couldn't start playing until I'd stopped.
For anybody who doesn't get it, you need to watch 'Come Fly With Me', a series from a few years back on the BBC.