There are many options for digital books that your children can access online, safely, FOR FREE.
Phoenix Public Library (eLibrary) https://www.phoenixpubliclibrary.org/browse/eLibrary You can apply for an eLibrary card online.
Maricopa County Library If you already have a library card, you can access a multitude of eResources using your library card number. https://mcldaz.org/locations/northvalley/
https://stories.audible.com/start-listen Audible (usually a paid site) is providing K-12 students with free access to a collection of K-12 audio books.
MackinVIA FREE eBooks and eResources available until Sept. 2020.
https://www.phoenixpubliclibrary.org/kids/Pages/Storytimes-Online.aspx The Phoenix Public Library has Storytime. No library card is needed for access to Storytimes Online.
https://www.weareteachers.com/virtual-author-activities/ We are Teachers has a list of Author Read Alouds.
https://www.storylineonline.net/ Storyline Online offers celebrities reading books aloud.
https://www.youtube.com/watch?v=q5vx-V8SFL4&t=187s CeCe Bell gives an Inside Story of Chapter 1 of her autobiographical graphic novel El Deafo. This book was one of the Battle of the Books that 5th and 6th graders read this year.
https://www.youtube.com/barnesandnoble Barnes & Noble has brought their Storytime online.
https://www.uniteforliteracy.com/ Unite for Literacy provides free digital access to picture books, narrrated in many languages, including Chinese!
https://vimeo.com/showcase/6955761 Mackin Storytime
https://abdodigital.com/?tk=414F33301B8E136DEE3F0A93BF1795E1 Abdo Digital
https://www.abdozoom.com/zoomchoice/?tk=AE75056C570B319A6B47A15986D1DEE9 Abdo Zoom
https://www.btsb.com/educational-resources-main-tab-landing-page/ Bound to Stay Bound has links to many resources such as Fun Activities, Virtual Tours, and Author's and Illustrators. BTSB updates these links daily.
As more resources become available, I will share them here with you.