Book editing is a viable online job if you’re detail-oriented and skilled in language. Start by defining the type of editing you’ll offer: developmental, line, or copy editing. Create a portfolio with sample edits and testimonials if possible, then join freelancer sites like Upwork, Reedsy, or Fiverr. As you build a client base, word-of-mouth referrals can also grow your business. You might specialize in specific genres or even academic editing to stand out. Charging per page or word is common in this field, and once established, editing can be a steady source of online income. Offering discounts for long-term projects or repeat clients may help retain customers.