Simply watch your RCI indicator(residential commercial industrial)when the colors go up, that means add zones for that sector, if they are going down that means you will see more buildings going run down, If the R is going down.. add more jobs, to increase it. commerce hardly ever is up in the beginning, so don't put in a lot unless it's really high. Also never, never put industrial next to residential.. (would you like living next to a polluting smoke stack). Generally I put the commercial sections between the R and the I, though they won't be used for a while, it cuts down on the pollution around the Residential areas and they won't complain, also the more of those zones the more money you will get. In the beginning you will probably run negative a few times, if you do you get "business deals" that help you out, only do the Max Prison one, the other is a high pollutant, it pays 400 a month which is good, but at a price of really high pollution it's not worth it, accept the prison one, build it(it has to have power and water to work ) You may also end up getting offers to sell garbage space to connected cities, or Water or Power, do the water and power seldomly,if you don't have enough of it, and stop supplying you get a hefty fee, so just stick with extra garbage space, and accept the eventual offer for it, and watch the income come in.