Iam a keen trekker and have done some treks on my own over the last few years , I have trekked upto heights of 3500 mts . I want to pursue this hobby a little more seriously now. I have been told and recommended by a lot of people about NIM & HMI and to do a course from there .
Can someone please tell me , which institute should I go to and what do they really teach there for a month . Are there any shorter courses , like 15 days or so , as I may not be able to manage 1 month of leave . And what is the cost involved in it ?