Hope this helps:

1. The number in the circle is your reputation rating. The more people upvote you the greater the number
2. Comments from 'bots' automated spam robots are suppressed. You can 'unhide' them but really don't want to. They just make the same comments on every post.
3. The system has checks to see if your content is already posted on the Internet. It can give you a warning if it sees that. The community strongly desires original content (not exact copy from other sites). Instead, add your comments or thoughts, or expand on your original post.
4. In reply's to blogs/posts, there is only 4 levels down (I think it is 4) per response.
5. Blog and Story are the same. A post is a reply to a blog/story (like what i am doing now - I am writing a post to your blog)
6. Your steemit account would be https://steemit.com/@victuruslibertas

Hope this helps.