There are many many options to choose from, Sanjeev. The one you finally pick will depend on your fitness level and the kind of experience you are expecting to have. Here's a helpful listicle that can help you narrow down your choices:
Not very sure about my fitness level Himani. I am more on the heavier side but post Roopkund i have realised mountains highly intrigued me and allows me to explore the real me. Thanks for the link :) Will scrutinize the options !!
What kind of a trek are you looking at?
A short 2 -3 one?
Or a longish one?
Would suggest accordingly. Kedarkantha, Kedartal, Great Himalayan National Park (several hikes there), Brighu, and many Shiva temples can be done depending upon your preference.