Best prep material for AP Micro and Macro?

<p>micro and macroeconomics
- I have a textbook by krugman
- barrons
- PR
- 5 Steps
- 5 Steps flash cards
- khan academy
- cram packet
- various youtube videos</p>

<p>Thanks</p>

<p>5 steps + the videos by ACDCLeadership on YouTube.</p>