Welcome to Steemit. We're really happy to have you here with us! There are many different apps you can use (referred to as dapps, decentralized apps), which all communicate with the Steem blockchain in a similar fashion, some are in your post responses here :)

There are many different types of bloggers and communities here. It's a very diverse atmosphere.

Much of it can be confusing at first, but you appear to have some blogging skills, so I'm sure you will do just fine! There are plenty here who are willing to help, should you have any issues along the way.

Good luck, and welcome aboard!