First week lessons learned from marketing a product as a developer

We've spent the last ten days trying to get marketing off the ground for our new project. We managed to get 600 followers and 12 email list signups.

I've struggled to find good advice work marketing as an indie dev, so documenting my learnings as I go.

I'd like to not have to reinvent the wheel though. If you know of any good, authentic material please link them to me!