The best way is to open google map of Hyderabad city and then search for directions between the Ramoji Film city and the place in Hyderabad from where the author wants to reach the destination.
Also the Ramoji Film city has its well developed website - http://ramojifilmcity.com/. The author may study the same for all important information made available on the website systematically. The contact details of the Ramoji Film city are as follows-
Ramoji Film city
1800 4250 9999
Contact details of the Sales & Marketing Office Ramoji Film City at Hyderabad are as follows-
1-10-76, Fair Field, Mayuri, Begumpet, Hyderabad – 500016