Copy Edit Training Materials

I need a sharp-eyed copy editor to polish Codistry’s instructional lessons. Each text already covers its subject. What I’m after is refined language that flows, makes sense instantly, and holds a consistent, professional tone... (Budget: $15 - $25 USD, Jobs: Content Development, Content Writing, Copy Editing, Copywriting, Editing, English Grammar, Instructional Design, Proofreading, Technical Writing)