This simply means taking notes of things that resonates with you, ideas that made you tick, quotes that kept you wondering.
This essay started as a simple capture of a paragraph I had read from the book Building a Second Brain by Tiago Forte in my own words and it turned into way more than just a translated paragraph.
It became a draft. These drafts are the basis for a lot of the essays I will eventually publish. It is better to start with a draft, a simple capture of a quote, an idea, an excerpt that you had seen than to start with a blank page.