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For Copyediting and Line Editing Classes

The Chicago Manual of Style, Seventeenth Edition is required for Beginning Copyediting for Fiction and recommended for Beginning Line Editing for Fiction.

The Chicago Guide to Copyediting Fiction is recommended but not required for Beginning Copyediting for Fiction and Beginning Line Editing for Fiction.
From Club Ed

The Business of Storytelling: Creating a Thriving Writer-Editor Career by Jennifer Lawler

The Writer’s Grimoire by Jennifer Lawler

Dojo Wisdom by Jennifer Lawler

Dojo Wisdom for Writers by Jennifer Lawler
Club Ed Picks

My favorite fountain pen: Pilot Retro Pop.

Soundcore Noise Cancelling Headphones are my favorite not-too-expensive solution when I’m trying to concentrate.
Paired with (free) noises.online and I’m very happy.