Hi Rupali,
As you are working has a HR Executive, let me suggest you to concentrate, observe, and learn. In a corporate no one will teach you what to do or not. See its simple you knew how to eat food, coz you saw everyone around you doing it. Most of the times your senior would be telling you or doing a thing once, it is you who has to improvise on your things which you tend to do. Always watch your back, knowingly and unknowingly there would be people who would be ready to screw you in many ways or other, So try stay out of trouble. Learning will be possible if you stick to an organization, every single moment you are learning something or the other. So stop worrying and do the best to get your learning experience.
Thanks
Phoenix