Put "-enablemoddingtools" (without quotes) in the launch options of the game in Steam (right click on game in library, properties, general tab). Now you can get access to various debug features. Once the modding tools are enabled, you can use the debug features in-game.

Shift+F1 opens a debug menu
Shift+F2 gives you a lot of all resources
Shift+F3 reveals the map

Pressing G activates the "god cursor" that you can then use to click various elements (resources, ships, gauges etc...) to modify (often increase) their values. Holding Shift, Control or Alt may results in different effects (such as reducing or maxing out values).