Hi @williamsyee. Yes, for 80/20 to work, you need data. Of course, you can always use other people's data, i.e. study their behaviour and results, but usually, the results may always be accurate, because what they do in the background, you will never know, and that will affect your data.

I would suggest starting with idea generation and start producing contents first. After a consistent streak of posting, you will have better set of data to analyse.