Hold SHIFT and type 'FUND' for $10,000.
It will cause an earthquake every third time you do it,
so do it before you start your city.
Another tip is to set the citizen's taxes to 0%.
Then just before tax collection (December or November if playing at fast speed) quickly set the taxes up to 20%.
Then after you collect taxes, put it back down to 0%.
This way the citizens think they are not paying any taxes.

SimCity / CD-ROM edition
Ctrl-P (watching the videos)
SIMCITY 2000

Email me if any of these don't work!