Yeah just to quickly echo the Keepgoing's comment, you should absolutely not be taking PT's until you've practiced the foundations a good amount. You don't want to waste those PT's, since there are a limited number. Go thru the syllabus and cover the sections on RC and LR, especially those related to the kinds of questions you're losing points on. Take the problem sets as practice, and once you start getting good scores on that, move on to the PTs. That's my advice at least, it worked for me.