If you are a customer of Oracle Endeca then I would assume you should have access to edelivery.oracle.com and can download the installers
You can visit this site and look for the appropriate document you are looking for. Endeca Information Discovery - Documentation
I am afraid, your question is very open and its hard to understand your situation.
You might want to start with MDEX / Platform services related docs and I recommend you try the "wine sample application" to understand Endeca better.