Hi, @freddio, I'm moderator of Snax.
There a lot of posts about Snax on Steem now, you can use one of them as instruction) for example https://steemit.com/snaxbountyoprogram/@milaan/review-of-snax-as-a-decentralized-social-media-overlay-for-monetizing-content-with-existing-popular-social-media. There you will find information on what Snax is, how to Sing Up and how to use it. In case of problems, you can contact our Discord channel for support https://discordapp.com/channels/509371605542109185/578602301069983766. Sing Up and start getting rewards)