Can you outline the process of the world's creation starting from Brahman as described in the source material?

Certainly. Chapter 50 details a specific sequence of creation. It begins when Brahman becomes 'qualified' (shabal) by Avidya, or ignorance. This allows it to be called 'Sat' (Existence) and become expressible. From this expressible Brahman, the 'Unmanifest' (Avyakta) emerges. Subsequently, from the Unmanifest, the 'Great Principle' (Mahat-tattva) is born, and within it, egoism arises. The process continues with the five Tanmatras (subtle elements) forming in the ego, followed by the five great elements. Finally, from the womb of these five great elements, the world is born, which is itself a characteristic form of Avidya-Maya.