[morituri]

Sure your long term target group is everyone, but you need to start with one niche group. Your partner can get the ball rolling in user recruitment. You should have a basic site up with your key product proposition and collect emails. - He can speak to different groups of people (a class of students, an interest group etc) to get them onboard in one go. - He can start doing business development - find marketing partners, sponsors, distribution partners, etc.

[ugdev]

What we already did is: set up a pre-registration (~1k mails atm). We're also present on social media platforms.

I'm with you to start with a niche.