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 though 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.
Although the focus of the project doesn't lie explicitly in economic theory, it provides a great opportunity for economics students to enrich their understanding of society, culture, state, and consequentially economics. It is also a great way for students of Western universities to gain a multicultural, global perspective into these topics, and widen their understanding of modern knowledge production.