It mainly depends on what kind of business you are talking about?
1. Small trading is achieved by constantly buying at low prices and selling at high prices.
If this is this kind of business, you need to know your purchase channels very well, because this will be directly related to your cost issue, so remember a formula. Profit = customer price * number of orders - cost. No matter what business you are doing, you must keep this formula in mind.
2. Technology patent, you have a good product for others to use, and others will buy your product to realize income.
If you are a technical geek, then you need to think clearly about what problems your product can help others solve. If your product is novel enough and has a certain room for appreciation, then congratulations, you can go Looking for venture capital.
3. Service industry, if you are in the service industry, you can achieve profitable income by serving others.
If you are engaged in the service industry, then you can only drive your own economic development through services. Remember, in this industry, your reputation is more important than anything else.
The most important thing is what kind of business do you want to do? If you already have an industry in mind, please feel free to communicate with me and we can discuss it together.