Welcome, Brian! Nice name, it just happens to be my real name as well (I go by Bud.)
The Steemit editor users HTML to process of the visual tweaks etc so you'll want to shore up on your HTML to make things easier. There are also a ton of awesome Steemit projects that help with uploading images, videos, etc.
I sometimes write my post in wordpress and then transfer the HTML code over.
I also have had great success using this awesome editor if you want to check it out. :)
Glad to see you here.