How to get the first sponsors for your newsletter

I often read on IH questions from newsletter creators about how to get the first sponsors for their newsletter. Why should I get sponsors? How to reach them? How much should I charge them? I tried to reply to these questions in the following article:

How to get the first sponsors for your newsletter https://carlchenet.com/how-to-find-first-sponsors-for-your-newsletter/

Let me know what you think about it and if it helps.