Hey bro, It's nice to have you join this wonderful community. For a start here, I would love you to read these posts (by Hive account@ryzeonline) below for newbies like you to understand how this blockchain.

@ryzeonline/hive-a-complete-beginners-guide-with-fun-doodles-pt-1

@ryzeonline/hive-a-complete-beginners-guide-with-fun-doodles-pt-2

Take your time to study it and digest it. It might be much and overwhelming but would totally help you understand a lot.

To clarify one thing about your Introductory post, Ecency is actually a dapp of Hive. You can just assume Hive to be Facebook and Ecency to be facebook messenger. Ecency is not actually Hive itself. So your introduction should be to Hive not Ecency. There are other dapps of Hive as well but you would get to know them through those articles I sent to you above.

Welcome to Hive once again.