Moodle Function API doc over REST

I am trying to develop a Moodle Android app. I am using MoodleREST source code for my reference.Is there any other documentation on Moodle site which documents moodle core webservice functions with their required params. I have found list of functions here http://docs.moodle.org/dev/Web_services_Roadmap but could not get proper documentation on how to call these functions with required params from mobile client using REST. I am new to moodle and still learning it, so my question can be a little naive so please bear with it :)