All I needed was an account on Mailchimp, Bitly and Twitter.
Thanks to Mailchimp I was able to build a very basic landing page and the subscriber list.
See the link, that all I needed!
Used Bitly to create a friendlier url.
And a Twitter account to start promoting it. Started following users that were actually relevant to my niche and reachable, ideally less than 1,000. People that could pay attention to their notifications, see my interactions and maybe follow me back. We'll go after the ones with more followers in the future, once we have some social proof.