In the spirit of hive, DUO offers a way for people to earn into the ecosystem with a minimum of 200 Staked DUO you can be eligible for daily curation and daily hive payments.
You can earn in by writing guest posts for DUO
If you are interested or have questions don't hesitate to ask
How much is dou and how can someone buy it?
Right now DUO is going for 1 hive each, one would have to buy it through hive-engine marketplace or tribaldex however I know you mentioned you don't have your keys but if you can send out hive though inleo that could also be a way to buy it but be sure to let me know first so we don't miss it
Alright. Is there any article or post about the project I can read to know how it works?
Sure thing https://ecency.com/pimp/@hive-193566/duo-white-paper !DUO !DOOK !BBH
You just got DUO from @bitcoinman.
They have 1/1 DUO calls left.
Learn all about DUO here.