NY Times articles on Coronavirus - The NYTimes provides a free coronavirus information portal, which contains lots of content and an e-book. Their FAQs section is fantastic.
Pandemic Response Repository - A collection of open source digital resources to help governments respond to the Coronavirus from New America. Lots of sample projects + code references that you can take to repurpose.
Listing of U.S. state/ local COVID-19 websites
California, NYC, and New Jersey all have excellent COVID-19 websites in terms of website usability, ease of finding key information, and simplicity.