CFF member Edward Evans recommends this website featuring several authors' writing tips: Open Culture. The site's daily emails are frequently interesting too.
CFF member Jennifer Kitses recommends this Literary Hub article on bad writing habits (recognizing them is the first step toward overcoming them): https://lithub.com/are-these-bad-habits-creeping-into-your-writing/
CFF member David Gullery recommends "The Books Briefing" weekly newsletter from The Atlantic, which can be subscribed to for free at this link: https://www.theatlantic.com/follow-the-atlantic/