Beta testers – how to?

Hello there i'm new here , nice to see so many nice persons here.
My question , is, i've just launched a website and spent about 300$ in adwords and fb ads, but actually i can't get beta testers, i've got about 30 beta testers no more.
Do you have any clue or solution to make the site more populated at early stages?
Cause the main problem is that i don't have content, what to do?
thanks!

See original post by jackjhonson