Set Up a Unique and Best Work Culture - key areas I would like to concentrate are policies, employee benefits, work environment at office

Hello Seniors, I'm working for a start up, where I would like to set the best work culture and policies.
I have referred few companies policies, their work culture as well. However, I would like to take more inputs from you, as your ideas and thoughts from your experience would be more helpful for me to come up with something great. The organization is into IT (a product based company), with a team size of 20 employees. The key areas I would like to concentrate are policies, employee benefits, work environment at office, etc.
Please suggest.

Please Begin by Creating a Safe and Secure Workplace Environment Where No Woman Shall Be Subjected to Sexual Harassment which is Now Every Employer's Duty in India under Section-21 of Sexual Harassment of Woman at Workplace (Prevention, Prohibition & Redressal) Act 2013
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Bengaluru, 30.8.19

Respected sirs/madam.,
Ours is a construction company with a total head count of 12 people. I am the HR / Admin of the company however, with a limited knowledge. I would like to seek assistance and guidance from experienced professionals with respect to rules & regulations; various work cultures to be introduced in the work place. Also how to think in various angles when a situation arises in the organisation.
Kindly extend your co-operation.
Upfront thanks to you all.
Regards
Naglakshmmi