Were all books made equal?

<p>I am trying my best to prepare for the PSAT, but at the moment the prep book I have is just for the SAT. Should I get the PSAT prep book or will the SAT prep book(I have the new and official one from college board) be sufficient enough to prepare myself for the PSAT. If you want to know why I'm worrying about the PSAT it's because I want to enter certain summer programs and internships the require a high PSAT score.</p>