This leading fantasy author is renowned for his complex fantasy worlds. In this six-part series for students at Brigham Young University (2020), two of his lectures are dedicated to world building. They offer a wealth of information on building compelling worlds, as well as a peek behind the curtain of how a master (and bestseller) gets it done.
Here is Lecture # 5: World Building Part One: Writing Science Fiction and Fantasy (March 5, 2020):
Here is Lecture # 6: World Building Part Two: Writing Science Fiction and Fantasy (March 6, 2020):