<p>Hi, so I'm taking the AP Bio test this year, and I've been studying out of REA. I just finished studying from it and now am studying the 2nd Edition Cliffnotes. I was just wondering if there was any significant differences between the 2nd edition and 3rd edition, because I downloaded the 2nd edition online for free (I really don't want to pay MORE money for AP tests). If there is a big difference, can anyone direct me to a place where I can download the 3rd edition?</p>
<p>I got 2nd edition. My teacher has the 3rd so I compared with it. It was pretty much the same.</p>
<p>I don’t know if there is a difference, but if you still want 3rd edition, check your PMs.</p>
<p>Can anyone recommend the best ways to use the CliffNotes Bio book?</p>