<p>which book is the best refresher for all the topics in physics test?
i bought SN,Barrons,and PR…they cover different topics…
(for example,vector,do i have to know vector multiplication/cross product/dot product???–>which i found in SN…)
and btw…which book provide good practice tests???can u guys give me the level of difficulty of barrons,PR,and SN?thanks</p>
<p>barrons - harder
pr - best for tests next to collegeboard guide</p>
<p>thx hellogoodby5</p>
<p>so no SN???</p>
<p>i just figured out sn is sparknotes
um… they arent amazing on review, but their questions are right-on</p>
<p>Go to here, and find his SAT prep materials.</p>