credit help

Instead of doing as everyone else says, having commercial as your source of income, you should produce food with Agriculture, almost always more money than if you went commercial after you sell your food on the market

all you need to make money is a planet. When you first start, you are making about 600 credits per turn. When first starting out, I reccomend that you use Commercial as your main source of income. So, go to your Manage Colonies screen, click on your homeworld. That will be the planet at the bottom. To begin with, there will be 1 housing on that planet. Add enough to make it be able to hold 500 population, with zero housing research that will be 50 housing infrastructure total on the planet. Once you do that, research Commercial infrastructure until the planet fills with population. Then, go back to the planet, and put all the Available Labor that will fit into Commercial. After that, research commercial to about level 20, then all ships from the technology tree, and then you can start to get more planets. Once you understand the basic flow of things, you can restart and experiment with other forms of income if you wish.