Nepal is a country of highly diverse and rich geography, culture, and religions. The mountainous north has eight of the world's ten highest mountains.
As Indian, you will not see much culture and language difference. You will not face any difficulties in currency exchange. But, keep in mind 100 INR is equivalent to 160 NPR.
I belong from Bihar and started my trip from Patna. There is direct bus from patna to kathmandu - thanks to government of bihar for this initiative. Condition of Bus was very good .It was a comfortable journey.I was traveling along with my elder brother. We reached kathmandu at 7:00 am as per schedule. When we drove off , we were mesmerized by the eternal beauty of kathmandu.