Feynman was the winner of the 1965 Nobel Prize in Physics. He taught himself calculus at the age of 13 and joined the Manhattan Project (the nuclear weapons program) at the age of 24; and Google founder Sergey Brin, Bill Gates, Jobs, and Larry Page were all proponents of feynman's learning method.
First of all! You have to choose something you want to learn.
It can be a language, it can be a skill, it can be a craft. In short, you can learn anything.
Then learn this yourself, and then teach what you have learned to "others".
What if you can't find such a person? Then teach yourself! In the process of teaching, you will find that you have not yet understood the place.
At this time, you need to check the defects and fill in the gaps, repeatedly query the data, learn, strengthen the memory, and then repeat the second step for verification, until you can successfully teach the corresponding knowledge.
Finally, you can go to streamlining! Simplify unnecessary, superfluous information and be able to express it in your own language.
This is Feynman's four-part learning method ~ The learning method has already told you, hurry up and act!