Global Social Theory is a large wiki-like project by Gurminder K Bhambra. Its central aim is decolonising and diversifying universities, production of knowledge, and social thought in general.
It represents a large online library divided into three parts: concepts, thinkers, and topics in/of social theory and decolonial thought. Every part comprises of short, introductory articles on an according theme. It may be helpful to give you a general overview (and a list of basic readings) on the most essential areas of social theory: caste, class, and race; civil society; racism; secularism; feminism and many others.
It may also allow students whose university curriculum in sociology, economics, or other social sciences lacks diversity to compensate for that.