Goto the link
Look for the particular certification you want to do and then click on "English" in column "PREP GUIDE" to view the contents of the certification exam.
Thank you very much. I want to do Certification on LiveCycle ES2 Form Developer. So can you please give me any information about how can I collect the Study materials for it.
The PDF you got through above link, contains the list of resources/study materials and their links.
So go through that PDF it will be sufficient.