Is Kota-Rajasthan the only place to prepare for IIT (Mains & Advance)? Kindly suggest other places as well.

No....KOTA is not the only place for IIT jee preparation........... There are no. Of coaching institutes in all over INDIA ................. You can prepare well for IIT-jee from ur city....... If u r thinking that the coaching institute in kota is best and their study materials r also best....... T