Start Out Right
At the title screen, type RCT2 and push enter. This will let you start out with 1,000,000 dollars, all rides, and unlimited loans.
$5,000 to spend
Press f to the finance command. Then press M +[Enter] to get $5,000.
Make guests stand up
After you beat a level everyone in the park starts clapping for you and let go of their balloons and then they have to go buy more.