All these people say how to get money fast but all you have to do is
1:go into scenario editor do all the crappy stuff until you get to the money part
2:set start money to max, start loan to 0, and max loan will just keep going up e.g.
(I set mine to 1000000)
3:set interest to lowest 5 percent and start your game

extreme rides
scenario editor
1:go to options part and set customers have higher intensity
2:build rides using cheat above
3:make sure that its park entry free not other
4:ride intensity must be more than 9 you will get lowest of 7.1 exitement
5:you can build own rides and put really fast with lots of loops and height and ppl will go on
6:only use rollercoasters and set ride fee to exitement rate
e.g. 7.45=7.50 7.44=7.40

I hope this has helped you