Alright, let's keep the ball rolling.
You've chosen a niche, done your research, got a domain name, and chose a webhost.
Now, it's time to install WordPress. I won't go into a lengthy diatribe about how...Google it or check out Level 1, where you learn not only how to install WP but also how to speed it up, secure it, and create content for it.
Plus, a whole lot more. For example, I've added a few audio trainings from Sean Mize about content creation and becoming an expert in your niche.
Now go get 'em!
Here's a link to past emails in case you missed anything: Email Archive.
Any questions, shoot me a reply.
Cheers,
Bill