Hey Harigobind, I am studying in BHU, Varanasi from last 5 years but i willnot be here in January. Best i can do is that i can tell you best things to do here. Things to do in Varanasi : 1) Sarnath (Take a auto from BHU main gate or Lanka,Rs 50 per person) 2)Temples lik Old Vishwanath temple,Sankat Mochan ,Birla mandir. 3)Evening Aarti at Dashashwamedh Ghat. After aarti walk from Dashashwamesdh to Assi ghat ( it will take 20 minutes. Most of the ghats of varanasi will be covered.) 4)Wake up at 4:30AM and go to Assi ghat and see morning aarti and sunrise.After that take a boat ride that will take you across all the ghats (Rs50 in share boat ) 5)You can also go to Devdari or Rajdari waterfalls if you have more days. 6)And for the delicacies try Bhaang Thandai (In godowolia),Non veg at Shah chicken (nayi sadak in Godowolia),Kerala cafe (Bhelupur), Paav bhaaji (at assi ghat), Kullad vali chai (At Kashi cafe at assi ghat),Lassi from pehelwan lassi (Lanka). Try every dish. Hope this would help you.