hi guys,thanks for all advises. i have another question to ask you. i have SCJP 5 Exam 310-055 - Exam Study Guide and i have also SCJP 5 Study Guide ,from what i can see they are both same, is it? and if not which book you guys recommend me to follow? i also have Kathy's and bert's head first java 5 ,and i booked my exam on May 30th.