Hey Ali, Depending on your current location you may choose following options : 1)Delhi -Jaipur, Auli, Rishikesh, Mussourie, Parvati valley,Kullu-Manali, Kedarkantha trek 2)Mumbai -Goa, Wayanand, Allepay, Banglore, Coorg, Munnar, Kumarakom 3)Calcutta — Gangtok, Darjeeling,North Sikkim, Shillong Acc. to my experience i would suggest choose any if these : 1)Jaiselmar
3)Rann of Kutch
4)Kedarkantha trek Hope this would help you.
If you want to make a plan for Kasol Manali, then book your flight/train to Delhi..then you have to take bus from Kashmiri Gate ( Delhi) to Bhuntar.. after reaching Bhuntar take local bus to Kasol. will take 1.30 hrs..cost 60-80 RS..
you can book your hotel/hostel by using Make my trip or Oyo rooms..