Things Jaana Dogan wished more developers knew about databases
This is a long article, but with good details on aspects of Databases that will likely trip people up. See: Things I wished more developers knew about databases. This article is mostly RDBMS-centric, but many of the concepts apply elsewhere.
Free D&D resources
I’ve been playing a couple of Dungeons and Dragons campaigns recently, and there are a couple of sites providing free resources during quarantine. D&D Beyond has their quarantine resources page and Wizards of the Coast has a free material page.