Not to be cynical, but for a newbie the web is not a very friendly place. Our mistakes are never forgotten and if we are dependent upon search engines to deliver traffic, then we need to be fully aware of their guidelines and policies. Nothing is worse than having your home page end up in a supplemental index.
Better to find a sandbox where you can hone your skills, and where it does not bring any strokes against a production website. Also consider building a website on your own computer. There you can edit and revise and refine all you want without the world seeing it. When a search engine first finds and crawls your site, you don't want any errors in those pages. If that page gets indexed, it could be months before any repairs show up in the index.
Just 2 cents worth.