My Discovery of CSS2

I just read more about CSS2 and I discovered alot of new tricks on CSS2, specially on selectors and pseudo elements, and since I am a self-study guy, it's my first time to know the standard terms for each part of the CSS StyleSheet,(rule,selector[this one I already know before],block,property,value and the at-rules)

This is a very interesting new addition to my skill and I can't wait(I already implemented some of these[specially the cute :first-letter pseudo-class]) to use the new selectors I discovered.