It depends on what you've learnt, the way is different. According to my experience: 1. If you are learning something small, like a function API usage or a lang

It depends on what you've learnt, the way is different. According to my experience: 1. If you are learning something small, like a function API usage or a language sugar, find a suitable doc, and write some simple test cases to verify that you understand it correctly. Absolutely, you can write down some notes about it. 2. If you are learning something complicated, like mastering a web framework, or master a new programming language, such tasks cannot be done in one day. You need to break down your learning goal into several smaller goals, and make a feasible study plan. That way, you'll get closer to your ultimate goal every day.