1. Create/Affiliate a product, a service, or a website with a method to profit off of it (CPM Ads/CPA/Email Lists/Ecommerce, etc.) 2. Market the product/service/website. That might mean diving into SEO, doing PPC ads, making videos or ringing people up. There are so many ways that work and will always work. 3. Experiment. Automate it if you can.
Making money boils down to getting traffic to your money source in one way or another. That should be your number 1 focus. It's not as difficult as it seems if you pay attention to what people are doing. Try different things until something works and scale it up.
Of course, there are also many blackhat methods, but those can change at any time. They should never be your main source of income, only side hustles.