I believe the correct usage would be "I am, too" as I previously wrote.
I don't mind answering your questions at all, but I feel this would be an inadequate way to learn the language. However, it seems with your history of questions on A2K, you request more specific information than may be practical or useful (to you) from the resources of this forum.
Seeing that you have so many of these type of questions, perhaps you might want to try investing in a English grammar and style book such as Strunk and White "The Elements of Style".
The rules themselves can be listed quite easily, though much of the value of the text is not only in the rules themselves but in Strunk and White's explanations and their copious (and humorous) examples.
As a former professional writer, I have used this book as my reference standard. It is available worldwide in paperback. Here's the link about it:
http://en.wikipedia.org/wiki/The_Elements_of_Style
Also, the following books are excellent, too:
'The Elements of Style' by William Strunk Jr.
'How To Speak And Write Correctly' by Joseph Devlin, (2006),
There's also the book 'A Dictionary of Modern English Usage, often referred to as Fowler's Modern English Usage, or simply Fowler's, is a style guide to British English usage, written by Henry W. Fowler, and first published in 1926. Modern English Usage covers in detail many issues of usage and pronunciation, from plurals and literary techniques to distinctions between similar words and the usage of foreign terms.