You need to come up with content that people actually want to read. Something that solves their problems. I wrote about this here.
The rest is easy.
Just share your content in places all around the internet where your audience hangs out. Facebook groups, Subreddits, LinkedIn groups, etc. and write some teaser copy that directly speaks to people who will benefit from this.
By doing the “specific content + specific teaser copy” you can even share your content in more generic places.
“If you’re trying to get more users for your Shopify app, you probably…”