Most of your questions are beginners questions for WordPress, not Suffusion. As a general guidance this forum is for the latter - foundational WP questions must be posted at the forums on wordpress.org.
2012willy wrote:can't figure out how to replace the "MY BLOG" in the header with my own title
See Settings -> General -> Site Title in your WP dashboard.
2012willy wrote:I would like to eliminate- Just another WordPress site - completely if possible.
Same as above. Change the tagline.
2012willy wrote:Will all this work automatically when I start using it.
?? You are already using it, aren't you? Unless you are using a plugin to mask your content, your site is live the moment you have a URL.
2012willy wrote:How do I change the links to the ones I want?
Which links are you referring to?
2012willy wrote:How do I change the Meta box to get incoming RSS feeds?
There is a specific RSS widget you can add from Appearance -> Widgets in your WP admin dashboard.