Ask HN: How to market a newsletter?

How do I share my newsletter with the people that would want it most? (I'm not putting the link in right now because I don't want it to be spam.) It's a newsletter that picks a topic that I become curious about and explores it over 5 links. It also has 3-4 other really good stories that I read over the week. How would I market this to jack-of-all-trades curious people? (My opinion is that it's better to be a jack-of-all-trades and be able to know a lot of stuff than to be really knowledgeable but stuck in a minute topic.)