A green library, or a sustainable library, enables us to collaborate with nature to fulfill some of our fundamental needs. This concept fosters a harmonious relationship between our community and the environment; green libraries, in essence, serve as examples for reconnecting with the beauty of the natural world. The purpose of this article is to delve into the practical challenges associated with transitioning a conventional library into a green one, as well as strategies for improvements. It explores topics such as the green library's historical background, its significance in environmental conservation, the librarian's role within it, ongoing green library projects, and initiatives promoting eco-friendly libraries, particularly focusing on India's efforts in this regard. Managing a green library poses several challenges. Firstly, the transformation process involves architectural redesign, incurring construction costs if an existing library is to be converted. Establishing a green library from scratch entails substantial initial expenses. Moreover, daily maintenance is crucial, necessitating proper employee training and ongoing efforts. Maintenance costs and the allocation of manpower are also essential considerations. Furthermore, this article examines the roles of key initiatives such as the United Nations Development Program (UNDP), Sustainable Development Goals (UNESCO), the IFLA Green Library Award, the Green Building Council of India, and LEED (Leadership in Energy and Environmental Design) in advancing sustainable practices within library settings.