Hello, Im new to oracle apps.. I have been working on Oracle for the last 6.5 years as a software developer. I have been working on Oracle 7.x, 8 and 10g database for back-end and Oracle Forms, Reports D2K, 6i and 10g for front-end. I would now like to upgrade myself to oracle apps, but dont know how to proceed. I know that oracle apps is basically a collection of ready made applications like Financial, HRMS, etc. But, I cant make out how to start learning the same. What do i need to install on my machine to practice/learn? Which books do I need to refer to? And most importantly, how to get myself certified as a Oracle apps developer, as I couldnt find any Oracle certification exam for the same. Any help will be highly appreciated. Thanks in advance.