Considering nobody can really go out right now, and even deliveries are tough to get, pdfs is the name of the game when it comes to, well, gaming. And Modiphius is here to help with some for you for nothing. They've got their The Elder Scrolls Call to Arms Core Rulebook, as well as two free scenario books up on their website that you can download now.
From the announcment:
Today we’re delighted to announce the release of the Elder Scrolls Call to Arms books in PDF!
The FREE Elder Scrolls Call to Arms Core Rulebook, FREE scenario book Escape from Helgen and Quests book ($5) and free Print n Play Dice Set are all available now as part of The Elder Scrolls Call to Arms Collection on Modiphius.net and DriveThuRPG.