This isn't a crazy accomplishment, but I've finally after a few days of trying to get sign-ups got two email signups. I tried facebook ads for both links and posts, but they didn't provide anything useful.
I however decided I'd share my newsletter content on Reddit in relevant subreddits with a simple 'You can get more like this on my newsletter' at the very very end. And people are liking my content! The post is currently sat at 32 upvotes and I've had someone DM me asking for suggestions :-)
I don't want to be premature on this, and I want to find other places which will warmly receive my content, and more importantly, find it useful. That's my next challenge 💪