Anne Rice
Website: http://www.annerice.com/
Best known for: Interview with a vampire, and her “Vampire Chronicles” series.
Advice: She has both a youtube channel and a writer’s advice section.
Brandon Sanderson
Website: https://brandonsanderson.com/
Best known for: The Cosmere universe, in which most of his fantasy novels are set. He is also known for finishing Robert Jordan's high fantasy series The Wheel of Time.
Advice: You can find a lot of his lectures on his youtube channel
Brent Weeks
Website: http://www.brentweeks.com/
Best known for: The blinding knife, which made the New York Times best seller list.
Advice: Check out his advice section on his website.
Christopher Paolini
Website: https://www.paolini.net/
Best known for: The Inheritance Cycle, which consists of the books Eragon, Eldest, Brisingr, Inheritance, and most recently The Fork, the Witch and the Worm.
Advice: He has an expansive writer’s advice section, which includes writing for children as well. Check out his writer’s corner.
Tomi Adeyemi
Website: http://www.tomiadeyemi.com/
Best known for: The Children of Blood and Bone, the first in the Legacy of Orïsha trilogy.
Advice: Her writing section includes a lot of different resources, writers’ groups courses and more. Check out the main writing portal.