[varlock]

Regarding the example of Stackoverflow vs Mailchimp, it'll be definitely more on the Mailchimp side.

As for the niche to pick, it's not yet clear to me what I can focus on - it looks like we're targeting the same people - but maybe it'll be clear after a while. Maybe, as @matijash was saying, I can start without differentiating and then do it down the line.

In terms of resources, it shouldn't cost much in terms of money, but it'll probably be in terms of time, as it'll be hard to fit the day job, family and this side hustle together.

Also, thanks for the link - definitely an enlightening read!