Louren�o At the bottom of the page is a search box, you'll get more posts than you imagine if you type 'Programmer Certification Study book' into it an press enter. You can also try out the certification books section of the bunkhouse.
In my opinion A Programmer's Guide to Java Certification by Khalid Azim Mughal, Rolf Rasmussen is an utimate one, this deals topics in depth. also actively looking at this site,there is nothing like that. Good Luck