The Builder City

The Proper Builder
Before Techs are Finished- http://prntscr.com/2tplox
After Techs are Finished- Simply remove the light and heavy industry plants, as well as the military institute, and replace them with arms plants. The ideal builder will have 13 arms plants and 11 houses, although you can also get away with 14 arms plants, 10 houses. That is, if the houses are all level 12. It is possible to have a city with 16, 17, 18 arms plants, but for every extra arms plant you add in after the 14th one, you have to upgrade your houses to levels 13, 14, and 15 in order to compensate for the loss of population.
Resource Sector- http://prntscr.com/2tpmkz This particular setup is geared more towards producing HTs, Scouts, and Rockets. Heavy on Steel, then oil, then rm. For an AV geared city, you would have Rare Metal plants where the Steel is, Steel where the Oil Plants are, and Oil Plants where the rare metal plants are. This allows the casual player to build troops at a fast rate every day without having to farm other players for resources in order to continue production. 
For a Fighter/ Bomber city, you would simply have the Oil Plants where the Steel plants are, the Steel Plants where the Oil Plants are, and leave the Rare Metal Plants where they are.
The reason you want this particular setup, if you are a casual player, is because it will allow you to build troops at a fairly fast rate, while at the same time having each city being capable of producing enough food to feed a large enough army to be able to defend itself against most small attacks that you are likely to be hit by if you are around enemy players. As well, early on you are going to want to be self sufficient in case you are not near enemy players, or are not strong enough to hit the ones that are nearby.