Literary Arts, the organization behind Portland’s beloved Wordstock Festival, hosts book events year round. Like everyone else, they’ve now gone online. Find their April events and others of interest at their new calendar page at literary-arts.org here:
https://literary-arts.org/2020/04/upcoming-online-literary-events-and-connections/?

Among the April events that readers, writers, and publishers everywhere would enjoy are:

Comics Relief Festival (First Second Books)
Saturday, April 18
8am – 2pm (PST)

Wordplay Virtual Book Festival (The Loft)
April 6 – May 5 2020

Literary Arts says they are committed to building community through online events, classes, seminars, and discussions. Their website also lets visitors dive into the rich archive of past events hosted by the organization including many well suited to educational projects.