If you think you can only use 10% of a video or song, 2000 words of a chapter, or that you must erase a copy of a video you taped off-air after 30 days, you may not fully understand copyright law. Perhaps you're confused by the various "educational use guidelines" that have been negotiated by lawyers and some educational groups. These guidelines may actually interfere with people's understanding of the law.

Review Lesson 2, The Cost of Copyright Confusion