Hey and welcome to Hive cruzingpower!
As Stevec mention, Hive works in a different way that "normal" social medies.
You have something called "Resource Credits or in short RC" which is getting drained everytime you do something on the Hive Blockchain. Don't worry about it, it will recharge slowly over time, but it can be a little bit hard in the beginning since you dont have a lot.
@giftgiver have a webpage where you can get 0.002 Hive Power (HP) and 0.003 Hive per hour. Hope that helps to get you started :D