suggestions

I want to mention a link.

http://www.chompchomp.com/rules/fragrules.htm

In this link, there has been mentioned some words
such as 'Punctuation Rule 1, Punctuation Rule 5 etc. What are these? Would anybody like to mention the link in which these rules are described?

The link that a I mentioned above is very much
useful. In this lesson, there has a nice discussion about how to fix the fragment that one found. But I want to learn more about infinitive phrase and lonely verb phrase. Would anybody like to give any other useful links that are able to fulfill my demand?