First off, welcome! Glad you see the appeal of Steemit!

Take a moment to read the Steemit White paper, then read the steemit quick guide. Then Google around steemit for the hundreds of grad posts (I can think of @steemguide and maybe @teamsteem but I'm sure there's many more). Once you get the hang of the basics of basics, write away!

*apologies, I usually will link stuff but I'm currently on mobile in an LRT ride. Steemit is my new go-to app nowadays that's how good it is.