Pay per Click again…………

Hi,
Due to some personal problem I’d stopped working on ppc and given back my clients projects i.e from 2007 to 2008.
And now I started my work on ppc again and getting new clients for the same. So I just want to know is there anyone who can help me out about the changes google adwords has done in their format of work.
Can anybody give me some link, book, or any other thing so that i can read what i have left in this one year.
Thanking them who will help me.
Bye

See original post by Hyder Ali