Hey Shraddha,
For cheap accommodation in Dehradun, you can opt for these :-
Youth gems girls hostel :-
Pondha, Uttarakhand - 9873008600
Doon habitat hostel :-
Kehri Gaon, Prem nagar , Uttarakhand - 09456541492
http://doonhabitat.com
Places to visit in Dehradun are these :-
1. A Nature view point called Sahastradhara which is 11 Kms from Dehradun...
2. Robber's cave and also called as Gucchupani is around 2 hrs from Dehradun ...
3. Tapkeshwar mahadev mandir
4. Mindroling Monastery
5. Malsi deer park is also a must visit which is 10 Kms from the city center...
Happy and safe Travelling !!!
Hey
you can visit the Buddhist Monastery in Clement town, robbers cave for some water fun , Mussoorie for the winterline, Landour for peace and some amazing pancakes , Sai temple Rajpur Road
Dehradun has some amazing cafes too:
Cafe de Picollo
Cafe Marigold
Sunburn bistro
Raazmataaz
The village
For night life and booze :
The great Indian pub
Aura kitchen and spirit
the brew factory
feel free to ask me any more recommendations
I am from Dehradun ????