Guillermo Ishi wrote:To be fair, a lot of the things you're linking to weren't up back then, some time last year.
The mappings between OCA7 and OCA8 exams were added on October 4, 2014 which was after the OCA8 beta exam (released on
August 31, 2014) but way before the official release of the OCA8 exam (on
January 10, 2015).
And I assume the first step you take when you decide an exam preparation is to read the official certification exam page with the exam objectives. So you know what you need to study to pass the exam. And even during your prepation it's recommended to check the objectives once in a while, because (as you probably know) Oracle can change them whenever they like.