You want to study economics because you are in politics, so don't bother, don't study economic theory, and be pragmatic directly. Make up what you need.

Because I don't know where you are from, I will simply say a few words: For example, first look at the relevant economic laws and regulations in China, such as the contract law, then look at the 11th Five-Year Plan of China, and then look at the 11th Five-Year Plan of your province. After reading it, you should subscribe to some magazines. Those who want to learn business management should read China Business Daily and go to the newsstand to see which one they are interested in. If you really want to learn theory and bring some practice, then buy a complete MBA. I bought that set for 800 yuan, three volumes and tens of thousands of pages. There are theories and cases, but I don't know if you have the patience to read them all. It doesn't matter if you don't. There is a catalogue. Pick what you need urgently and look first. If you don't want to spend money, go to the Financial Times website. Now there is a simplified Chinese version. It would be better if you could read English directly.