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.