I help startups grow online so feel free to ask me any questions you may have.
3,000 newsletter sign-ups is impressive and you should definitely start thinking of monetizing. You are on the right path with building a content plan for the newsletter, but you can go many different directions.
The idea of having ad spots on your newsletter is a decent idea, but I’d suggest a few other ways. I would need to understand you business more and what you are offering to get so many sign-ups. Then we can find out a plan for you. DM me and we can chat more about it.