Got a 70 but as far as I was concerned could have failed. Could narrow down Q's to 2 possibilities but was unsure of my choices. Like I said, I had no idea how I did. Nice surprise...

Used TI BA solar calculator (about $14)

IC, Annenberg videos and Idiot's Guide. Got most out of Idiot's Guide for overview (I knew nuthin..) and IC.

Studied pretty intensely for about 2 weeks, then intermittently for another 2.

Good luck! I was terrified of this test. Give me 25 essays to write any day....