What you need: Corkboard.me 

Risk level: Low 

The truth of the matter is that tests change from year to year. Very few teachers administer the same exam year after year. What doesn’t change is the information they teach and test you on. If you’re able to find people who’ve taken a class before you, you can set up a public “message board” of sorts where everyone can contribute to a major cheat sheet. We recommend using the digital whiteboard on Corkboard.me. Share the link and watch as people add on the bits and pieces of info they think is pertinent for you to pass. Power to the people.