Step 1. Download a university physics textbook Step 2. Read said textbook Step 3. Refer to internet to give relief and contrast to your mental model. Step 4.

Step 1. Download a university physics textbook Step 2. Read said textbook Step 3. Refer to internet to give relief and contrast to your mental model. Step 4. Take notes Step 5. When you finish that textbook, use your knowledge as a foundation to select and consume the next. Repeat from step 1. There’s a self-learning approach absent of any dependence on ycombinator comments. And it’s plenty efficient—there aren’t even exams if you don’t want to take them!