Hi everybody, first of all I would like to thanks the JavaRanch Team and the JavaRanchComunity. I use to visit almost every day JavaRanch. I also would like to thanks specially Marcus Green , Dan Chisholm, Sun Guogiao and Velmurugan Periasamy. I prepared the exam in 9 weeks with an average of 6-8 hours study each week. I had some programming experience in c++ and c#. I study on the Heller & Roberts book (3rd edition). I worked thru the book two times. Than I take Sun Guogiaio Mock's tests. I had an average of 65%. Then I studied on some Dan Chisholm topics test: Foundamentals, Threads, Wrapper, Assertions. Than I take the Marcus Green Mock's test. I got an average of 80%. I always didn't answer the question about AWT and IO. I found all the mock's test very intresting and also well prepared. The book was ok. I hope these information will help the people that would like to get certified. Tahnk you again! Sergio.