Proofreading is the final step in reviewing a written work to check for errors. The document provides many tips for effective proofreading, including preparing yourself by minimizing distractions, taking breaks to proofread with fresh eyes, reading slowly and checking each word, printing documents to proofread on paper as well as on screen, having a friend proofread your work, and proofreading multiple times using different techniques. Effective proofreading takes concentration, patience and time.