Great questions! Thanks for sharing.

These guys have said it all!

I do think it is a good practice to fill in these items for very post/page your create (I think this is covered in an early lesson)
SEO Title; SEO Description; SEO Keywords

I'll take a shot at this. I'm still pretty new at it, but I had some of these questions.

(1) Yes, you have a website! :)

(2) Yes, you can have pages on that website.

(3) Yes, you can have content on those pages.

(4) Should all your content be posts on the pages you've set up? That's up to you. I use a blog roll so my latest post goes on my front page. I have a menu set up for the top buttons so I can make drop-down menus of the articles. That means my articles are listed twice: Once on the blog roll and then they appear in the proper category across the top.

The difference being when you write a post, it goes to your home page if not set up as static. When you do a page, you create the page and then you create the post ON that page, i.e. in the editor screen after you select the page you want.

(5) Keywords. Recommended is once in your title, once in your first paragraph, once in the body of content, preferably near the end. That's for about 500 words or so. If you have a really long article, put another instance of the keyword or string somewhere in the middle.

(6) Static page or blog roll? That's entirely up to you. I don't use a static home page but many do. If you want your readers to see standard information every time they visit, you may want to do a static.

If this is clear as mud, hit me back and I'll try again, K?