Hyy mam, 

I am providing you a link below which contains law firms about Guwahati 

http://www.legalserviceindia.com/lawyers/guwahati.htm

If further doubts, do comment 

I hope this helps 

Hyy Anjilina, 

I am providing you with a link below which contains details of law firm internship in guwahati 

https://www.lawctopus.com/tag/law-internship-guwahati/

If further doubts, do comment 

I hope this helps