You can of course download the Fullprof program easily from the internet. Read the instruction manuzel carefully and try to use the program with the given example like LaMnO3. This take you quite far. You should join the Fullprof school that is arranged every year in Grenoble. If you cannot do that then find a colleague in India who knows how to use fullprof. I think Aligarh is not very far from Benaras and the group of Professor D. Pandey is well versed with this program. You should go there and learn to use the program their with the help the Ph.D. students. You can always contact Juan Rodriguez-Carvajal if you have real problems. If you have specific question then you can forward it to me as well. Sorry that I did not see your question before. Otherwise I had responded long ago.