One approach you might take is to read mainstream works. You could start with a principles level book like Mankiw’s, Principles of Economics. But introductory books tend to gloss over the core of mainstream economics, which is modeling. To get a treatment of that, you have to move to intermediate level works. You might try Snowden and Vane’s book, Modern Macroeconomics.
Another approach is to read critiques of the mainstream paradigm. Take a look at Murray Rothbard’s articles:
Ludwig von Mises’s book, Human Action, has sections that critique the mainstream approach.