I've heard that the Farmer's Market "Reward" is one of the best things you can have because it boosts the overall health of your citizens and heightens the value for commercial and residential zones....
...but man, i feel agriculture is kinda useless. Not much gain, huge zones required (and many of them if you go for the farmer's market) and not much income. Also horrible amounts of water pollution.
So screw Agriculture.
Actual tips:
- Build by demand: You can make the start of your city smoother by not overcompensating. A power plant and a school are everything you really need at the start. Not even water is required for a few low wealth residentials to settle in. ...You might want to build a fire station after a while though.
It's a slow start, but it helps dampen the initial cost of the city. If a police station and other things are required, you will be notified. Once you have a decent income and your zones planned out, you can add water pumps and suddenly see your city growing very fast.
- Exploit the Hell out of Toll Booths: If your Industrial Zone is a bit away from your other zones, build a single avenue leading to it and build a bunch of toll booths along the way. Traffic may be a later concern, but until then the citizens will pay a lot of money without complaints ^^.
- Waste-To-Energy facilities have a bunch of downsides, like pollution, moderate maintenance costs and a high initial price, but set thier energy output/funding to zero and you have a clean and cheap alternative to landfills and recycling centers.
...i've rediscovered Sim City 4 due to the steam deal and find it more addictive (and time consuming : /) than even Minecraft.
I manage to get cities off to a good start (on normal difficulty), but unfortunately once the city grows i find it hard to manage my finances...i have no problem making SOME money, but it's never enough to be able to actually expand my city without coming close to being in debt.