If you’re going to write and get published – whether blog posts, newspaper/magazine articles, books, whatever – sooner or later you’re going to encounter these (and other) issues with copyright:

• Knowing how and when to file a copyright on your work.
• Making sure you’re not violating copyright or fair use laws when you’re quoting or linking to someone else’s work or site.
• Knowing what to do if someone violates the copyright on your work.

The U.S. Copyright Office has more information than you ever thought you’d need on copyright laws and policies, including details on Title 17 of the U.S. Code and Fair Use.

Find them on Twitter (@CopyrightOffice) or on YouTube (/uscopyrightoffice).

They also have a blog and offer several email subscriptions.

Another excellent resource is Copyright Law in 2020 Explained in One Page, which is much more readable than the .gov info.